Fonds consists of approximately 100,000 letters dating between 1904 and 1953 to and from authors, publishers, agents, film studios, journals, newspapers, etc. concerning the use of articles, stories, and manuscripts. Some of Chapman's personal correspondence is included.

Correspondence to or from:

• I Confess, New York, N.Y. (1926)
• Ideal Publishing Corp., New York, N.Y. (1943)
• Idlewild Turkey Ranch, Whittemore, Mich. (1936)
• Illinois Book Exchange, Chicago, Ill. (1909)
• Illinois Central System, Chicago, Ill. (1921-1936)
• Illinois Farmer and Farmer's Guide, Quincy, Ill. (1918)
• Illinois Guardsman, Chicago, Ill. (1937)
• Illinois Motorist, Chicago, Ill. (1930)
• Illinois State-Journal, Springfield, Ill. (1915)
• Illinois State Register, Springfield, Ill. (1917)
• Illustrated Campanion, New York, N.Y. (1918-1919)
• Illustrated Detective Magazine, New York, N.Y. (1931-1932)
• Illustrated Home Sewing Magazine, New York, N.Y. (1931)
• Illustrated Love Magazine, New York, N.Y. (1931-1933)
• Illustrated News, Los Angeles, Calif. (1933)
• Illustrated Daily News, New York, N.Y. (1919)
• Illustrated News Mirror, Toronto, Ont. (1923)
• Illustrated World, Chicago, Ill. (1922-1923)
• Imperial Press, Sugar Land, Tex. (1928)
• Independent, Kansas City, Mo. (1929)
• Independent, Lowry City, Mo. (1914)
• Independent Pressroom, Minneapolis, Minn. (1932)
• Independent Salesman, Cincinnati, Ohio. (1927)
• Independent Woman, New York, N.Y. (1931)
• Indiana Catholic & Record, Indianapolis, Ind. (1930)
• Indiana Farmer, Indianapolis, Ind. (1914)
• Indianapolis Times, Indianapolis, Ind. (1918)
• Industrial Banker, Chicago, Ill. (1923)
• Insdustrial Distributor & Salesman, Chicago, Ill. (1928)
• Industrial Dixie, Dallas, Tex. (1928)
• Industrial Executive, New York, N.Y. (1928)
• Industrial Pioneer, Chicago, Ill. (1923)
• Industrial Power, Chicago, Ill. (1927)
• Industrial Record, Chicago, Ill. (1930)
• Infantry Journal, Washington, D.C. (1931)
• Information, A Digest of Current Events, New York, N.Y. (1915)
• Inland Poultry Journal, Indianapolis, Ind. (1932)
• Inland Printer, Chicago, Ill. (1915-1930)
• Inland Topics, Chicago, Ill. (1934-1936)
• Institutional Jobber, New York, N.Y. (1929)
• Instructor, Rochester, N.Y. (1933)
• Insurance Bulletin, San Francisco, Calif. (1927)
• Insurance Field, Louisville, Ky. (1927-1928)
• Insurance Register, Philadelphia, Pa. (1927)
• Insurance Salesman, Indianapolis, Ind. (1927)
• Interlaken Mills, Providence, R.I. (1918)
• The International, New York, N.Y. (1912)
• International Correspondence Schools, Scranton, Pa. (1929-1931)
• International Feature Services, New York, N.Y. (1922)
• International News Service, New York, N.Y. (1913)
• International Nickel Co. of Canada, Copper Cliff, Ont. (1936)
• International Publishing Company, Chicago, Ill. (1934)
• International Railway Co., Buffalo, N.Y. (1927)
• International Railway Journal, Philadelphia, Pa. (1913)
• International Syndicate, Baltimore, Md. (1931-1933)
• International Trade Papers, Inc., New York, N.Y. (1928)
• Investment Banking, Chicago, Ill. (1931)
• Interurban Magazine, Chicago, Ill. (1916)
• Iowa City Daily Press, Iowa City, Iowa. (1915)
• Iowa Guardsman, Des Moines, Iowa. (1937)
• Iowa Homestead, Des Moines, Iowa. (1918-1929)
• Iron Age, Chicago, Ill. (1912)
• Irving-Cloud Publishing Co., Chicago, Ill. (1927)
• Islander Magazine, Staten Island, N.Y. (1928)

Correspondence to or from:

• Jackson, Fred, New York, N.Y. (1917-1918)
• Jackson, G.A., Boston, Mass. (1914)
• Jackson, Hall N., Cincinnati, Ohio. (1915)
• Jackson, Margaret Weymouth, Spencer, Ind. (1937-1941)
• Jackson Citizen Patriot, Jackson, Mich. (1919)
• Jacksonville Metropolis, Jacksonville, Fla. (1917)
• Jacksonville News, Jacksonville, Fla. (1913)
• Jacksonville Times-Union, Jacksonville, Fla. (1917-1918)
• Jacobsen Publishing Company Inc., New York, N.Y. (1931)
• Jahn & Ollier Engraving Co., Chicago, Ill. (1915)
• Jahnke, William A., Yongstown, [Ohio]. ([19--])
• Jameson, Helen F., Chicago, Ill. (1915)
• Jamkowski, T. Books, Detroit, Mich. (1946)
• Jansson Brothers Company, Chicago, Ill. (1918)
• Janvier, Meredith, Baltimore, Md. (1925)
• Jarvie, Robert R., Evanston, Ill. (1936)
• Jasper, Thomas, Chicago, Ill. (1914)
• Jeffersonian, Chicago, Ill. (1922)
• Jenkins, Charles Christopher, Toronto, Ont. (1924)
• Jenks, Tudor, Bronxville, N.Y. (1917)
• Jepson, Edgar, London, England. (1936)
• Jerger, F., Martins Ferry, Ohio. (1916)
• Jillson, Frank A., Providence, R.I. (1945-1946)
• Johnson, Brevet, Elkhorn, Wis. (1936)
• Johnson, Burges, Poughkeepsie, N.Y. (1921)
• Johnson, Dorothy, Chicago, Ill. (1946)
• Johnson, E.W., New York, N.Y. (1917)
• Johnson, Martyn, Los Angeles, Calif. (1920)
• Johnson, O.S., Salt Lake City, Utah. (1947)
• Johnson, Ryerson, Toronto, Ont. (1942)
• Johnson, W.E., Westerville, Ohio. (1913-1915)
• Johnson's Bookstore, Springfield, Mass. (1917-1918)
• Johnson's Fish Market, Long Island, N.Y. (1936)
• Johnston, Charles, Bergensfield, N.J. (1914)
• Jones, D.A., Lakewood, Ohio (1931)
• Jones, Edward Lee, Richmond, Va. (1948)
• Jones, Francis Arthur, New York, N.Y. (1923)
• Jones, Nard, Bellevue, Wash. (1941)
• Josephinum Weekly, Columbus, Ohio. (1930-1931)
• Josselyn, Talbert, New York, N.Y. (1944)
• Journal of American Commerce, Chicago, Ill. (1920-1921)
• Joyce, James, Zurich. (1919)
• Judd, Edward P. Company, New Haven, Conn. (1923)
• Judy, Will Publications, Chicago, Ill. (1944)
• Judy Publishing Company, Chicago, Ill. (1927)
• Juergens & Andersen Company, Chicago, Ill. (1916-1917)
• Junior Home Magazine, Chicago, Ill. (1923-1930)
• Junior Safety Patrol, Chicago, Ill. (1931)
• Junior Yanks, Chicago, Ill. (1919)
• Juvenile Journal, Minneapolis, Minn. (1912)

Correspondence to or from:

• Ladies Home Economics, Kansas City, Kan. (1929)
• Lafave, Arthur J., Cleveland, Ohio. (1937)
• Lafayette-South Side Bank & Trust Co., St. Louis, Mo. (1929)
• Laird & Lee, Chicago, Ill. (1914-1930)
• Lake Publishing Company, Baltimore, Md. (1910)
• Lamb, A Magazine of Fun and Finance, New York, N.Y. (1916)
• Lamb Publishing Company, New York, N.Y. (1916-1917)
• Lambert Publishing Company, Chicago, Ill. (1925)
• The Lamp, Peekskill, N.Y. (1926-1939)
• Landau, Jane, Chicago, Ill. (1929)
• Lane, Jeremy, New York, N.Y. (1922)
• Lane, R.E., Oak Park, Ill. (1930)
• La Patrie, Montreal, Que. (1933-1934)
• Lares and Penates, Philadelphia, Pa. (1924)
• Larrimore, Lida, Devon, Pa. (1932)
• La Salette, Altamont, N.Y. (1938)
• Lasalle Extension University, Chicago, Ill. (1927)
• Lathrop, G.A., Gunnison, Colo. (1937)
• Lauderdale Lakes Improvement Association, Chicago, Ill. (1919)
• Lauffer, Berthold, Chicago, Ill. (1933)
• Laughter, Philadelphia, Pa. (1926)
• Laurentian Publishers, Chicago, Ill. (1914)
• Lavenson, Jay, Philadelphia, Pa. (1930)
• Lea, Constance N., West Hill, Ont. (1934)
• Lea, Fannie Heaslip, New York, N.Y. (1930)
• Lean, George A., Elkhorn, Wis. (1936)
• Leather Progress, New York, N.Y. (1928)
• Leblanc, Esthele, St. Hyacinth, Que. (1934)
• Lee, Helen A., Cambridge, Wis. (1934-1935)
• Lee, Jennette, Northampton, Mass. (1936-1937)
• Lee, Reuel P., Minneapolis, Minn. (1933)
• Lefax Incorporated, Philadelphia, Pa. (1927)
• Le Gallienne, Richard, Menton, France. (1936)
• Lehner, Adolph P., Oconto Falls, Wis. (1929)
• Leicht, Dorothy, Winona, Minn. (1933-1935)
• Leichton, W.R., Fayetteville, Ark. (1916)
• Leighton Industries Inc., San Francisco, Calif. (1927-1928)
• Lenart, Elta, Chicago, Ill. (1928)
• Lenhart, Ralph L., York, Pa. (1930)
• Lenniger, August, New York, N.Y. (1934-1935)
• Lescarboura, Austin C., New York, N.Y. (1928)
• Leuin, M.L. & Company, Pittsburgh, Pa. (1934)
• Levant Literary Agency, Jerusalem. (1936)
• Levy, Robert, New York, N.Y. (1937)
• Leward, Elsie Singmaster, Gettysburg, Pa. (1931-1934)
• Lewis, E. St. Elmo, Detroit, Mich. (1931)
• Lewis, James Hamilton, Washington, D.C. (1933)
• Lewis, Margaret Cameron, New York, N.Y. (1920-1930)
• Lewis, Tracy H., New York, N.Y. (1926)
• Lewis, William Eugene, New York, N.Y. (1926)
• Lewis Publishing Company, St. Louis, Mo. (1909-1910)

Correspondence to or from:

• Libertarian, Greenville, N.C. (1925-1930)
• Library Clearninghouse, Chicago, Ill. (1913)
• Library Journal, New York, N.Y. (1935)
• Life and Health, Washington, D.C. (1932)
• Life Association News, New York, N.Y. (1927)
• Light and Life Sunday School Publications, Chicago, Ill. (1932)
• Lighting, Inc., Chicago, Ill. (1929)
• Lighton, William R., Fayetteville, Ark. (1916)
• Lilius, Aleko E., Manila, P.I. (1931)
• Lilly, Eli & Company, Indianapolis, Ind. (1936)
• Limelight, Palm Springs, Calif. (1935)
• Lincoln, Joseph C., Villa Nova, Pa. (1920-1936)
• Lincoln Motor Co., Detroit, Mich. (1927)
• Lincoln National Life Inc. Co., Fort Wayne, Ind. (1928)
• Lindlahrs Magazine, New York, N.Y. (1930)
• Lindquist, H.L., New York, N.Y. (1935)
• Lindsay, Vachel, Springfield, Ill. (1930)
• Lionel Magazine, New York, N.Y. (1930-1938)
• Lions Club Magazine, Chicago, Ill. (1924)
• Liotta, Josephine, New York, N.Y. (1938)
• Lippincott's Magazine, New York, N.Y. (1914)
• Literary Agency of London, London, England. (1911-1915)
• Literary Associates, Inc., Philadelphia, Pa. (1932)
• Literary Business of James Knapp Reeve, Franklin, Ohio. (1928)
• Literary Features International Syndicate, New York, N.Y. (1937)
• Literary Features, Ltd., London, England. (1937)
• Literary Florida, Tampa, Fla. (1939)
• Literary Year Books Press, Liverpool, England. (1927)
• Litsey, Edwin Carlile, Lebanon, Ky. (1926)
• Littel, Edmund M., Traverse City, Mich. (1937)
• Little Flower Circle, Grand Rapids, Mich. (1932)
• Little Flower Magazine, Oklahoma City, Okla. (1928)
• Little Review, Chicago, Ill. (1914)
• Little Story Magazine, Philadelphia, Pa. (1920)
• Live Girl Stories, New York, N.Y. (1929)
• Live Wire, Buffalo, N.Y. (1927-1928)
• Lively Stories, New York, N.Y. (1930)
• Lloyd, David, New York, N.Y. (1936-1937)
• Lloyd, Everett, San Antonio, Tex. (1928)

Correspondence to or from:

• MCA Management, Ltd., New York, N.Y. (1948-1949)
• M.I.T. Club of Birshire County, Pittsfield, Mass. (1947)
• Mabie, Louise Kennedy, Pasadena, Calif. (1938)
• MacArthur, C.L. & Son, Troy, N.Y. (1908)
• MacBeth, Madge, Ottawa, Ont. (1950)
• McBride, W.L., Chicago, Ill. (1938)
• McCall Corporation, New York, N.Y. (1922-1938)
• McCann, C.W., North Hollywood, Calif. (1930)
• McCann, H.K. Company, New York, N.Y. (1926)
• McCann-Erickson, Inc., New York, N.Y. (1939)
• McCarter, Margaret Hill, Topeka, Kan. (1932)
• McCarthy's Book Store, Minneapolis, Minn. (1919)
• McClatchy, V.S., Sacramento, Calif. (1910)
• McClelland & Stewart, Ltd., Toronto, Ont. (1919)
• McClure, Marjorie Barkley, Cleveland, Ohio. (1932)
• McClure, O.J. Advertising Agency, Chicago, Ill. (1923)
• McClure Publications, New York, N.Y. (1908-1916)
• McCord, Mather M., Rome, Ga. (1928)
• McCormick, Leander J., Chicago, Ill. (1913-1925)
• McCorquodale, W.E., Orange, Tex. (1926)
• McCoy & Company, Chicago, Ill. (1914-1915)
• McCuaig, C.B., Buffalo, N.Y. (1930)
• McCutcheon-Gerson Advertising, Chicago, Ill. (1921)
• McDonald, J.C., San Antonio, Tex. (1930)
• MacDougal, R.K., South Bend, Ind. (1926)
• McGillicuddy, O.E., Toronto, Ont. (1924)
• McGlathery, Pattie, Greenwood, Miss. (1936)
• McGraw, Frank E., Billings, Mont. (1916)
• McGraw-Hill Book Company Inc., New York, N.Y. (1929-1933)
• MacHarg, William, New York, N.Y. (1921-1923)
• McHenry Flour Mills, McHenry, Ill. (1920)
• Machinists Monthly Journal, Washington, D.C. (1923)
• McIlvaine, Ellen, New York, N.Y. (1934)
• McIntosh Battery & Optical Company, Chicago, Ill. (1914)
• McIntyre, John T., Philadelphia, Pa. (1926-1938)
• McIntyre, O.O., New York, N.Y. (1927)
• McJunkin Advertising Company, Chicago, Ill. (1932)
• Mack, Helen, New York, N.Y. (1949)
• Mack, Thomas D., Albuquerque, N.M. (1923)
• McKenny, W.E., Chicago, Ill. (1920)
• McKeogh, Elsie, New York, N.Y. (1939)
• McKinley Publishing Co., Kansas City, Mo. (1928-1929)
• MacLean, Charles Agnew, New York, N.Y. (1926)
• Mcleod & Allen, Toronto, Ont. (1910)
• MacManus, Seumus, New York, N.Y. (1909-1918)
• McMichael, Jean, Toronto, Ont. (1929)
• McNary, Herbert L., Dorchester, Mass. (1932)
• Macon Chamber of Commerce, Macon, Ga. (1937)
• Mac's Magazine Shop, Chicago, Ill. (1934)

Correspondence to or from:

• Mademoiselle, New York, N.Y. (1935-1941)
• Madison Buyer's Guide, Madison, Wis. (1934)
• Madison State Journal, Madison, Wis. (1912)
• Magazine, Chicago, Ill. (1935)
• Magazine Digest, New York, N.Y. (1942-1944)
• Magazine, Exchange, Chicago, Ill. (1944)
• Magazine Feature Service, Chicago, Ill. (1928-1941)
• Magazine Maker Publishing Co., New York, N.Y. (1912)
• Magazine of Business, New York, N.Y. (1929)
• Magazine of Wall Street, New York, N.Y. (1919)
• Magazine World, New York, N.Y. (1925-1947)
• Magee, John Company, Chicago, Ill. (1911-1912)
• Magnificant, Manchester, N.H. (1926-1939)
• Magniphone Company, Chicago, Ill. (1916)
• Maier, Howard, New York, N.Y. (1949)
• Maine Motorist, Portland, Me. (1930-1932)
• Maize, Lillian Taft, Pasadena, Calif. (1936)
• Management, Chicago, Ill. (1927-1928)
• Mandick, John, Chicago, Ill. (1949)
• Mandick, Richard, Chicago, Ill. (1947)
• Manhattan Merchant, New York, N.Y. (1930)
• Manley, Stuart, Cloquet, Minn. (1946)
• Mann, Helen Avis, Madison, Wis. (1945)
• Mannados Bookshop, New York, N.Y. (1948)
• Mansfield, Justin, Chicago, Ill. (1942)
• Manufacturers Club of Philadelphia, Philadelphia, Pa. (1927)
• Manufacturers News, Chicago, Ill. (1927-1928)
• Manufacturers Record, Daytona Beach, Fla. (1928)
• Manufacturing Industries, New York, N.Y. (1928)
• Manuscript Market Guide, Highland Falls, N.Y. (1928)
• Manuscript Mart, Chicago, Ill. (1928)

Correspondence to or from:

• Mason, Edith Huntington, Chicago, Ill. ([19--])
• Mason, Grace Sartwell, New York, N.Y. (1931-1932)
• Masonic Home Journal, Louisville, Ky. (1929)
• Masonic Magazine, Detroit, Mich. (1928)
• Masonic News, Detroit, Mich. (1930)
• Masonic Observer, Chicago, Ill. (1940)
• Masonic Outlook, New York, N.Y. (1926-1927)
• Massachusetts Guardsman, Boston, Mass. (1938)
• Masson, Thomas L., Glen Ridge, N.J. (1923-1926)
• Masterman, Mildred Stanley, Portland, Me. (1952)
• Mateo, F. Alex, Lima, Peru. (1951)
• Mathews, Betty, Chicago, Ill. (1950)
• Mathews Company, Detroit, Mich. (1936)
• Mathews-Northrup Works, Buffalo, N.Y. (1928)
• Matson, D.H., South Whitley, Ind. (1930)
• Matteson-Fogarty-Jordan Co., Chicago, Ill. (1930)
• Mattingly, Seth W., Dearborn, Mich. (1947)
• Mauerman, Ruth, Chicago, Ill. (1935)
• Maxwell, Eleanor G., Pittsburgh, Pa. (1953)
• Maxwell, Victor, New York, N.Y. (1926)
• Mayer, Howard G., Chicago, Ill. (1935)
• Mayer, Irma R., Denver, Colo. (1935)
• Mayer, Ruth R., New York, N.Y. (1933)
• Mayer Service, Los Angeles, Calif. (1937)
• Mayer Studio, Los Angeles, Calif. (1922)
• Mayfair, Toronto, Ont. (1940)
• Mayflower Company, London, England. (1924)
• Mayo, Eva B., [?]. (1901)
• Maytag Company, Newton, Iowa. (1928-1929)

Correspondence to or from:

• Messenger of the Precious Blood, Carthagena, Ohio. (1938)
• Messenger of the Sacred Heart, New York, N.Y. (1931-1941)
• Messenger of Our Lady of Sorrows, Chicago, Ill. (1924-1929)
• Messner, Julian, Inc., New York, N.Y. (1933-1939)
• Meteor Stamp and Publishing Co., Toronto, Ont. (1914)
• Methodist Book Concern, Cincinnati, Ohio. (1914-1937)
• Central Methodist Episcopal Church, Endicott, N.Y. (1935)
• Methodist Episcopal Church, Nashville, Tenn. (1928)
• Metropolis, Newark, N.J. (1934-1935)
• Metropolitan Home Journal, New York, N.Y. (1931-1932)
• Metropolitan Life Insurance Company, New York, N.Y. (1924-1926)
• Metropolitan Newspaper Service, New York, N.Y. (1921-1927)
• Metropolitan Publishers, Chicago, Ill. (1932)
• Metropolitan Review, New York, N.Y. (1926)
• Metropolitan Sound Studios, Hollywood, Calif. (1930)
• Meyer, E.M., Chicago, Ill. (1915)
• Mezquida, Anna Blake, San Francisco, Calif. (1936)

Correspondence to or from:

• Mind Magic Magazine, Philadelphia, Pa.(1931)
• Mineapolis Daily Times, Minneapolis, Minn.(1942)
• Minneapolis-Moline Power Implement Company, Minneapolis, Minn.(1931)
• Minneapolis Star Journal and Tribune, Minneapolis, Minn.(1939-1943)
• Minnesota Historical Society, St. Paul, Minn.(1948)
• Minor, Frank E., Chicago, Ill.(1919)
• Minton, Balch & Co., New York, N.Y.(1932-1936)
• Miraculous Medal, Germantown, Pa.(1930-1942)
• Miranda, Steve, San Francisco, Calif.(1928)
• The Mirror, New York, N.Y.(1933)
• The Mirror, Winnipeg, Man.(1940)
• Miss America, New York, N.Y.(1943)
• "Mrs", New York, N.Y.(1939)
• The Missionary, Washington, D.C.(1927-1938)
• Mississippi Motor News, Davenport, Iowa.(1927)
• Missouri Farmer, Columbia, Mo.(1938-1940)
• Missouri Homestead, Columbia, Mo.(1923)
• Missouri Motorist & Apropos, Columbia, Mo.(1939)
• Missouri Pacific Railway Company, St. Louis, Mo.(1923)
• Missouri Ruralist, St. Louis, Mo.(1921-1931)
• Mitchell, Charles, Roslindale, Mass.(1952)
• Mitchell, Henry Willis, New York, N.Y.(1926)
• Mitchell, Marion Strobel, Chicago, Ill.(1936-1943)
• Mitchell, Ruth Comfort, Los Gatos, Calif.(1931-1932)
• Mitchell Motors Company, Inc., Racine, Wis.(1918)
• Mittler, S., New York, N.Y.(1947)

Correspondence to or from:

• Morand, Cyril, Philadelphia, Pa. (1950)
• Morehouse, Hopkins, Winnipeg, Man. (1925)
• Morehouse Publishing Company, Milwaukee, Wis. (1932)
• Morey, Walt, Dallas, Tex. (1950)
• Morgan, Ernest, Yellow Springs, Ohio. (1938)
• Morgan, J.E., Chicago, Ill. (1914)
• Morgan, John J., Boston, Mass. (1917)
• Morlan, George K., Springfield, Mass. (1948)
• Moroney's Merger, Cincinnati, Ohio. (1915)
• Moroso, John, Cresskill, N.J. (1927-1931)
• Morrill, Edward & Son, Boston, Mass. (1948)
• Morris, Gouveneur, New York, N.Y. (1913)
• Morris, William Agency, New York, N.Y. (1936)
• Morris Book Shop, Chicago, Ill. (1914)
• Morrison, Noah Farnham, Elizabeth, N.J. (1917)
• Hotel Morrison, Chicago, Ill. (1936)
• Morrow, William & Co., New York, N.Y. (1930-1939)
• Morse, Grace, New York, N.Y. (1932-1940)
• Mosher, Jack H., Toronto, Ont. (1935)
• Mosher, Thomas B., Portland, Me. (1935)
• Mostman Book Shop, Newark, N.J. (1933)
• Moss, James Clayton, Belton, Tex. (1947)
• Motion Picture Producers and Distributors of America, New York, N.Y. (1935-1937)
• Motor, New York, N.Y. (1927)
• Motor Age, Chicago, Ill. (1927)
• Motor Boating, New York, N.Y. (1924-1939)
• Motor Chat, New York, N.Y. (1925)
• Motor Express, Boise, Idaho. (1924)
• Motor in Canada, Winnipeg, Man. (1927-1930)
• Motor Maintainence, Chicago, Ill. (1927)
• Motor Service, Chicago, Ill. (1927-1930)
• Motor Topics, Cincinnati, Ohio (1939)
• Motor Travel, New York, N.Y. (1927)
• Motor West, Los Angeles, Calif. (1927-1935)
• Motordom, Albany, N.Y. (1922-1932)
• Motorists Association of Illinois, Chicago, Ill. (1930)
• Motorman Conductor and Motor Coach Operator, Detroit, Mich. (1940)
• Motorowner, Kansas City, Mo. (1928)
• Motortrade, Kansas City, Mo. (1928)
• Motour, Cincinnati, Ohio (1927)
• Moulton, Roy K., New York, N.Y. (1923)
• Mounier, J.F., Newport Beach, Calif. (1935)
• Moving Picture Review Digest, New York, N.Y. (1936)
• Movie Home Journal, Boston, Mass. (1932)
• Movienews, Chicago, Ill. (1933)
• Movie Romances, Chicago, Ill. (1933)
• Mowery, William Byron, Sarasota, Fla. (1932-1938)
• Mowre, Carson W., New York, N.Y. (1935)
• Moyle, Seth, New York, N.Y. (1913-1916)

Correspondence to or from:

• Oakland Tribune, Oakland, Calif. (1921-1931)
• Oberlin College Library, Oberlin, Ohio (1938)
• O'Brien, George, Olkhorn, Wis. (1932-1936)
• O'Brien, Howard Vincent, Chicago, Ill. (1932-1933)
• Observer, Brooklyn, N.Y. (1928)
• O'Connor, Edward, St. Louis, Mo. (1930)
• O'er The Threshold, Grand Rapids, Mich. (1930-1932)
• Office Appliances, Chicago, Ill. (1928)
• Office Equipment Company, Chicago, Ill. (1935)
• O'Flaherty, John, Hollywood, Calif. (1931)
• Ogden, George W., Van Nuys, Calif. (1935-1938)
• Ogle, Nina Wilcox Putnam, Palm Beach, Fla. (1933)
• Ohio Legion Councillor, Toledo, Ohio. (1930)
• Oklahoma City Times, Oklahoma City, Okla. (1924-1932)
• Old Colony Magazine, New York, N.Y. (1928)
• Old Stone Mill, Whitewater, Wis. (1936)
• Oldsmobile Pacemaker, Lansing, Mich. (1926)
• Olympic Games Contest, Los Angeles, Calif. (1932)
• Omaha Bee, Omaha, Neb. (1923)
• Onlooker, Detroit, Mich. (1931)
• Onward, Toronto, Ont. (1924-1932)
• Onward, Richmond, Va. (1931)
• Oovici-Fiede, New York, N.Y. (1932)
• Open Road, Boston, Mass. (1921-1923)
• Opportunity, Chicago, Ill. (1924-1932)
• Optimist International, St. Louis, Mo. (1928-1932)
• Orchard and Farm, Los Angeles, Calif. (1921)
• Oregon Golf & Sportsman, Portland, Or. (1931-1932)
• Oregon Legionnaire, Portland, Or. (1930)
• Oriental Stories, Chicago, Ill. (1931-1932)
• Orr, Myron David, Caro, Mich. (1936)

Correspondence to or from:

• Pearson, Edmund Lester, New York, N.Y. (1937)
• Pelican's Chicago Squab, Chicago, Ill. (1929)
• Pelley, William Dudly, Boston, Mass. (1931)
• Pelley Publishers, Asheville, N.C. (1935-1936)
• Pemberton, Robert L., St. Marys, W.Va. (1924)
• Pen and Ink, St. Louis, Mo. (1931)
• Pendry, H.E. Company, Topeka, Kan. (1927)
• Pennsylvania Farmer, Pittsburgh, Pa. (1926-1937)
• Pennsylvania Guardsman, Harrisburg, Pa. (1939)
• Pennsylvania Motorist, Pittsburgh, Pa. (1927)
• Pennsylvania News, Pittsburgh, Pa. (1927)
• Penoyer, Ruth, New York, N.Y. (1933-1934)
• Peoples Companion Magazine, Dayton, Ohio. (1933)
• Peoples Gas Light & Coke Company, Chicago, Ill. (1928)
• People's Press, Inc., Manila, P.I. (1937-1939)
• Pere Marquette Magazine, Detroit, Mich. (1922-1926)
• Periodical Press of Canada, Toronto, Ont. (1922)
• Perkins, Dwight H., Evanston, Ill. (1928)
• Perry, George Boardman, Minnineague, Mass. (1930)
• Perry, Jennings, Jackson, Tenn. (1934)
• Perry, Lawrence, New York, N.Y. (1934-1936)
• Pershing, General John J., Washington, D.C. (1924-1930)
• Petroleum Marketer, Tulsa, Okla. (1928-1929)
• Petzinger, Lambert, Little Falls, N.J. (1930)
• Phantasmus, Pittsburgh, Pa. (1924)
• Phelan & Balfour, Toronto, Ont. (1922)
• Philadelphia Chamber of Commerce, Philadelphia, Pa. (1933)
• Philadelphia Daily News, Philadelphia, Pa. (1936)
• Philadelphia Magazine Depot, Philadelphia, Pa. (1916)
• Philadelphia Sunday Item, Philadelphia, Pa. (1927)
• Philadelphia Sunday Transcript, Philadelphia, Pa. (1927)
• Philadelphian, Philadelphia, Pa. (1925-1926)
• Philbin, Agnes, Chicago, Ill. (1911)
• Philbrick, Allen, Chicago, Ill. (1917)
• Philip, Alex J., Gravesend, England. (1935)
• Phillips, I.W., Chicago, Ill. (1934)
• Phillips, Leroy, Boston, Mass. (1917)
• Phillpotts, Eden, Torquay, England. (1921)
• Philopolis Press, San Francisco, Calif. (1914)
• Phoenix Hosiery Co., Milwaukee, Wis. (1928-1929)
• Physical Culture Magazine, New York, N.Y. (1931-1932)

Correspondence to or from:

• Point of View Publishing Company, Kansas City, Mo. (1923)
• Police 1313, Chicago, Ill. (1927-1930)
• Policeman's Monthly, Inc., New York, N.Y. (1914)
• Polk, R.L. & Co., Detroit, Mich. (1927-1935)
• Pollock, Frank L., Shedden, Ont. (1931-1937)
• Pomeroy, Claire, New York, N.Y. (1932)
• Pontiac Daily Press, Pontiac, Mich. (1937)
• Poole Bros., Chicago, Ill. (1922)
• Poppy, Martha, Drummond, Wis. (1928)
• Popular Fiction Magazine, Chicago, Ill. (1931)
• Popular Mechanics Magazine, Chicago, Ill. (1929-1931)
• Popular Publications, New York, N.Y. (1935-1937)
• Popular Radio, New York, N.Y. (1922)
• Popular Science Monthly, New York, N.Y. (1926-1929)
• Portal, Cincinnati, Ohio. (1924-1937)
• Porter, Rebecca N., Hollywood, Calif. (1938)
• Portland Cement Association, Chicago, Ill. (1929)
• Portland Evening Express, Portland, Me. (1934)
• Portland Evening Press, Portland, Me. (1934)
• Portland Journal, Portland, Or. (1932-1936)
• Portland Oregonian, Portland, Or. (1919-1936)
• Portland Telegram, Portland, Or. (1918-1925)

Correspondence to or from:

• Post, Melville Davisson, Lost Creek, W.Va. (1926)
• Postage Magazine, New York, N.Y. (1927)
• Postal Telegraph Co., Chicago, Ill. (1910-1939)
• United States Post Office, Chicago, Ill. (1910-1939)
• Postum Company, New York, N.Y. (1929)
• Pottle, Juliet Wilbor Tompkins, New York, N.Y. (1923-1936)
• Poultry Tribune, Mount Morris, Ill. (1923)
• Powel, Harford, New York, N.Y. (1935)
• Powner, Charles T. Co., Chicago, Ill. (1927-1934)
• Poynter, Beulah, New York, N.Y. (1932-1934)

Correspondence to or from:

• Rhea, Ira B., Harbert, Mich. (1916)
• Rhoades, S.N., Philadelphia, Pa. (1917-1919)
• Rice, Chester H., New York, N.Y. (1913)
• Rice, Frank Henry, New York, N.Y. (1921-1922)
• Rice, Grantland, New York, N.Y. (1945)
• Rice, T.J., Chicago, Ill. (1916-1918)
• Rice, Virginia, New York, N.Y. (1941-1944)
• Rice, Wallace, Santa Barbara, Calif. (1912-1920)
• Rich, Louise Dickinson, Philadelphia, Pa. (1943)
• Rich, Vernon W., Boston, Mass. (1945)
• Richards, P., Berlin, Germany. (1921)
• Richland Farm Products Company, Richland Centre, Wis. (1914)
• Richmond Times-Dispatch, Richmond, Va. (1918)
• Richmond Virginian, Richmond, Va. (1915-1917)
• Ricketts, C.L., Chicago, Ill. (1920)
• Ridge Farm Creamery, Ridge Farm, Ill. (1916)
• Ridgway Company, New York, N.Y. (1916)
• Ridley Candy Maker, New York, N.Y. (1913)
• Riess, Curt, New York, N.Y. (1943)
• Rigby, George H., Philadelphia, Pa. (1914)
• Riggs, Arthur Stanley, Thorndale, Pa. (1916)
• Riley & Britton, Chicago, Ill. (1913)
• Ringer, Max, Chicago, Ill. (1916)
• Ringlet Hill Poultry Farm, Cayuga, Ill. (1916)
• Ringley, Fred J. Company, Chicago, Ill. (1917-1919)
• Ringo, Paul, Stevensville, Mich. (1915-1917)
• Ringrose, Hyacinthe, New York, N.Y. (1941)
• Ringsmuth, L.J., Clear Rapids, Iowa. (1916)
• Rivers, B. Lucille, Chicago, Ill. (1916-1917)