Correspondence to or from:

• N.C.W.C. News Service, Washington, D.C. (1930-1935)
• Nathan, Charles, Chicago, Ill. (1913-1914)
• Nation, New York, N.Y. (1914)
• National Association of Credit Men, New York, N.Y. (1929)
• National Autoist, Boston, Mass. (1927)
• National Automobile Chamber of Commerce, New York, N.Y. (1924)
• National Bibliogphile Service, New York, N.Y. (1931)
• National Biscuit Co., New York, N.Y. (1928)
• National Booksellers Code Authority, New York, N.Y. (1935)
• National Builders Bank, Chicago, Ill. (1930)
• National Bureau for Blind Artists, Inc. New York, N.Y. (1938)
• National City Company, New York, N.Y. (1921)
• National Committee for Mental Hygiene, New York, N.Y. (1914)
• National Conference on Race Betterment, San Francisco, Calif. (1915)
• National Creditors Protective Service, New York, N.Y. (1932-1934)
• National Distributors' Association, Peoria, Ill. (1928)
• National Education Association of the U.S., Washington, D.C. (1937)
• National Farm News, Washington, D.C. (1927)
• National Farmer, Bay City, Mich. (1914)
• National Farmer and Stock Grower, St. Louis, Mo. (1918)
• National Farmers Magazine, Washington, D.C. (1923)
• National Federation of Business and Professional Women's Clubs, New York, N.Y. (1931)
• National Film Corporation of America, New York, N.Y. (1922)
• National 4H Club Magazine, Oklahoma City, Okla. (1932)
• National Furniture Warehousemen's Assoc., Philadelphia, Pa. (1924)
• National Garden Bureau, Chicago, Ill. (1930-1934)
• National Geographic Society, Washington, D.C. (1919-1936)
• National Gleaner Forum, Detroit, Mich. (1928-1931)
• National Hibernian, Philadelphia, Pa. (1918)
• National Justice, New York, N.Y. (1929)
• National Kourier Magazine, Washington, D.C. (1928)
• National Life Insurance Company, Chicago, Ill. (1916)
• National Magazine, Boston, Mass. (1918-1932)
• National Magazine Section, Cleveland, Ohio. (1927)
• National Miller, Chicago, Ill. (1929)
• National Motorist, San Francisco, Calif. (1928-1932)
• National Newpaper Service, Chicago, Ill. (1933-1934)
• National Order of Audubon Societies, New York, N.Y. (1918)
• National Press Agency, Ltd., London, England. (1914-1915)
• National Progressive Committee, Chicago, Ill. (1912)
• National Program Co., San Francisco, Calif. (1927)
• National Provisioner, Chicago, Ill. (1928-1929)

Correspondence to or from:

• National Retail Clothier, Chicago, Ill. (1930)
• National Retail Hardware Association, Argus, Ind. (1913)
• National Safety News, Chicago, Ill. (1928-1929)
• National Security League, Chicago, Ill. (1918)
• National Sportsman, Boston, Mass. (1933)
• National Stockman and Farmer, Pittsburgh, Pa. (1920-1923)
• National Theatre Program Co., Cleveland, Ohio. (1927-1932)
• National Underwriter, Chicago, Ill. (1928)
• National Union Assn. Society, Toledo, Ohio. (1931)
• Nations, Gilbert O., Washington, D.C. (1921)
• Natural Life Corporation, Washington, D.C. (1923-1924)
• Nature Magazine, Washington, D.C. (1928-1931)
• Natureopathic Publishing House, Hartford, Conn. (1927)
• Navy Department, Washington, D.C. (1912)
• Navy News, Los Angeles, Calif. (1933)
• Nazarene Publishing House, Kansas City, Mo. (1922-1935)
• Nazerite, Canton, Ohio. (1927)

File consists of correspondence to or from:

• Neandross Book Shop, Ridgefield, N.J. (1926-1931)
• Nebraska Farm Journal, Omaha, Neb. (1918)
• Nebraska Ruralist, Lincoln, Neb. (1918)
• Neely Printing Co., Chicago, Ill. (1926)
• Neff Publications, Chicago, Ill. (1934)
• Neidig, William J., Chicago, Ill. (1920)
• Neilan, Marshall, Hollywood, Calif. (1922-1930)
• Nelson, A.B., Chicago, Ill. (1932)
• Nelson, J.N., Chicago, Ill. (1919)
• Nelson, Thomas & Sons, New York, N.Y. (1920)
• Neuman, John M. Company, Elgin, Ill. (1915)
• Neustadt, Heinz, Berlin, Germany. (1934)
• New Age, Washington, D.C. (1936)
• New England Fish Exchange, Boston, Mass. (1916)
• New England Historic Genealogical Society, Boston, Mass. (1919)
• New England Sportsman, Boston, Mass. (1931)
• New English Weekly, New York, N.Y. (1931-1932)
• New Fiction Publishing Company, New York, N.Y. (1919)
• New Ideas, Camden, N.J. (1927)
• New Jersey Motoring, New Burnswick, N.J. (1927)
• New Life, Topeka, Kan. (1927)
• New Magazine, Toronto, Ont. (1922)
• New Menace, Branson, Mo. (1921)
• New Movie Magazine, New York, N.Y. (1930)
• New Orleans Item, New Orleans, La. (1917-1922)
• New Outlook, Toronto, Ont. (1933-1934)
• New Pearson's, New York, N.Y. (1923)
• New St. Louis Star, St. Louis, Mo. (1914)
• New South Magazine, Chattanooga, Tenn. (1927)
• New Story Magazine, New York, N.Y. (1914)
• New Success Magazine, New York, N.Y. (1920-1921)
• New West Magazine, Salt Lake City, Utah. (1918)
• New York American, New York, N.Y. (1927-1937)
• New York Central Fast Freight Lanes, Chicago, Ill. (1912)
• New York Editorial Service, New York, N.Y. (1919)
• New York Evening Telegram, New York, N.Y. (1914-1922)
• New York Evening World, New York, N.Y. (1914)

File consists of correspondence to or from:

• New York Journal, New York, N.Y. (1919-1934)
• New York Life, Plainfield, N.J. (1931)
• New York Life Insurance Company, Chicago, Ill. (1913)
• New York Lodge No.1 B.P.O. Elks, New York, N.Y. (1915)
• New York Magazine, Program, New York, N.Y. (1930)
• New York Masonic Outlook, New York, N.Y. (1926-1927)
• New York Morning Express, New York, N.Y. (1933)
• New York Motor News, New York, N.Y. (1927)
• New York National Guardsman, New York, N.Y. (1924-1927)
• New York News, New York, N.Y. (1932-1938)
• New York Newspaper Clipping Service, New York, N.Y. (1928)
• New York Post, New York, N.Y. (1918-1937)
• New York Post Office, New York, N.Y. (1934)
• New York Post Syndicate, New York, N.Y. (1936-1937)
• New York Press, New York, N.Y. (1904-1906)
• New York Public Library, New York, N.Y. (1932-1934)
• New York, Railway Employees Magazine, New York, N.Y. (1927)
• New York Review of Business, Syracuse, N.Y. (1929-1930)
• New York State College of Agriculture, Ithaca, N.Y. (1936)
• New York Sun, New York, N.Y. (1932)
• New York Telegraph, New York, N.Y. (1913)
• New York Times Current History, New York, N.Y. (1916)
• New York Woman, New York, N.Y. (1936)
• New York World, New York, N.Y. (1923-1924)
• New York World-Telegram, New York, N.Y. (1932-1937)
• New Yorker, New York, N.Y. (1925-1940)
• New Zealand Herald, Auckland, N.Z. (1936)
• Newall, S.A. & Sons, Stornoway, Scotland. (1936)
• Newark Eagle, Newark, N.J. (1915)
• Newark Ledger, Newark, N.J. (1933-1937)
• Newark Sunday Call, Newark, N.J. (1932)
• Newark's Old Book Store, Newark, N.J. (1919)
• News and Views, New York, N.Y. (1936)
• News Graphic, New York, N.Y. (1937)
• News-Mirror Syndicate, Toronto, Ont. (1932)
• News Printing Company, Huron, S.D. (1919)
• News Service Bureau, Dayton, Ohio. (1934)
• Newspaper Features Limited, London, England. (1923-1937)
• Newton, A. Edward, Berwyn, Pa. (1931-1933)

File consists of correspondence to or from:

• Nichols, J.F., Portland, Conn. (1913)
• Nichols, William Edwin, Chicago, Ill. (1915)
• Nicholson, E.J., St. Louis, Mo. (1918)
• Nicholson, Meredith, Asuncion, Paraquay. (1921-1934)
• Nickel Publications, Chicago, Ill. (1933)
• Nicols, Dean & Gregg, Saint Paul, Minn. (1931-1933)
• Neilsen, A.C. Company, Chicago, Ill. (1930-1931)
• Night Hawk, Rochester, N.Y. (1930)
• Nims, Floyd E., Chicago, Ill. (1939)
• 1933: A Year Magazine, Philadelphia, Pa. (1933)
• No Name Magazine, Denver, Colo. (1926)
• Nomad, New York, N.Y. (1930)
• Nordeen, Victor, Chicago, Ill. (1915)
• Nordpress, Stockholm, Sweden. (1937)
• Norfolk Ledger-Dispatch, Norfolk, Va. (1917-1921)
• Norris, Charles G., New York, N.Y. (1915-1924)
• Norris, Kathleen, Saratoga, Calif. (1930-1937)
• North America, Baltimore, Md. (1930-1932)
• North American Film Corporation, Chicago, Ill. (1915)
• North American Newspaper Alliance, New York, N.Y. (1930-1932)
• North Shore Hand Laundry, Chicago, Ill. (1913-1915)
• North Shore Motor Club, Chicago, Ill. (1930)
• North Shore Real Estate, Highland Park, Ill. (1915)
• Northcliffe, Lord, London, England. (1914)
• Northern Farmer, Bismarck, N.D. (1918)
• Northern Headlight, St. Paul, Minn. (1932-1933)
• Northern Messenger, Montreal, Que. (1936)
• Northrop & Company, Minneapolis, Minn. (1917)
• Northwest Farm Trio, Spokane, Wash. (1930)
• Northwest Farmstead, Minneapolis, Minn. (1920)
• Northwest Progress, Seattle, Wash. (1931)
• Northwest Stories, New York, N.Y. (1931)
• Northwest Tribune, Chicago, Ill. (1919)
• Northwestern Christian Advocate, Chicago, Ill. (1931-1932)
• Northwestern Chronicle, Minneapolis, Minn. (1930)
• Northwestern Steel & Iron Works, Eau Claire, Wis. (1914)
• Norton, W.W. & Co., New York, N.Y. (1934)
• Nor'Wester, South Bend, Ind. (1925)
• Norwich Bulletin, Norwich, Conn. (1917)
• Norwood, Ed. P., Chicago, Ill. (1918)
• Notes & Comments, Rochester, N.Y. (1914)
• Nourse, Harvey, Bayfield, Wis. (1936)
• Novelty News, New York, N.Y. (1928)
• Nugents, New York, N.Y. (1931)
• Nugget, Nome, Alaska. (1927)
• Nusbaum Book & Art Co., Norfolk, Va. (1915)
• Nutricia Farm Products Co., Thiensville, Wis. (1915)

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:

• Other People's Money, Chicago, Ill. (1928)
• Ottenheimer, I. & M., Baltimore, Md. (1928)
• Our Army, Brooklyn, N.Y. (1928-1931)
• Our Navy, New York, N.Y. (1928-1932)
• Ourselves, Chicago, Ill. (1926)
• Our Sunday Visitory, Huntington, Ind. (1931-1932)
• Our World, New York, N.Y. (1923)
• Our Young People, Nashville, Tenn. (1923-1924)
• Outdoor America, Chicago, Ill. (1930)
• Outdoor Life, Denver, Colo. (1927)
• Outdoor Recreation, Chicago, Ill. (1924)
• Outdoor World & Recreation, New York, N.Y. (1913)
• Outdoors South, Atlanta, Ga. (1925)
• Out West Bargain House, Denver, Colo. (1926-1927)
• Oxford Press, New York, N.Y. (1920)
• Oyen, Henry, New York, N.Y. (1914)
• Ozark Countryman, Springfield, Mo. (1921-1923)

Correspondence to or from:

• Pace Company, Chicago, Ill. (1924)
• Pacific Coast Motorist, Vancouver, B.C. (1923-1925)
• Pacific Golf and Motor, Los Angeles, Calif. (1927)
• Pacific Legion, Tacoma, Wash. (1923-1930)
• Pacific Magazine, Los Angeles, Calif. (1932)
• Pacific Mutual Life Insurance Co., Los Angeles, Calif. (1927)
• Pacific Northwest Farm Trio, Spokane, Wash. (1922-1937)
• Pacific Northwest Retailer, Seattle, Wash. (1928)
• Pacific Rural Press, San Francisco, Calif. (1923-1931)
• Packard, Frank L., Lachine, Que. (1930)
• Packing House News, Tampa, Fla. (1923)
• Paddleford, Alice, Whiting, Kan. (1932)
• Page, Curtis Hidden, Gilmanton, N.H. (1934)
• Paine, Henry Gallup, New York, N.Y. (1928)
• Paine, Raph D., Durham, N.H. (1920)
• Paine, Webber & Co., Chicago, Ill. (1936-1938)
• Painter & Decorator, LaFayette, Ind. (1927)
• Pallas-Morosco Film Company, Los Angeles, Calif. (1916)
• Palmyra Charities, Chicago, Ill. (1912)
• Palo Alto Public Library, Palo Alto, Calif. (1940)
• Panamerican Advertising & Press Service, New York, N.Y. (1936-1937)
• Pangborn, Georgia Wood, New Haven, Conn. (1931-1933)
• Parade, Philadelphia, Pa. (1936)
• Parade of Youth, Washington, D.C. (1937)
• Parents' Magazine, New York, N.Y. (1930)
• Park Avenue Social Review, New York, N.Y. (1932)
• Parker, Daniel Mason, Fayette, Iowa. (1927)
• Parker, Francis W. School, Chicago, Ill. (1918)
• Parker, H.W., Saint Paul, Minn. (1909)
• Parker-Brawner Company, Washington, D.C. (1930)
• Parkergrams, Janesville, Wis. (1929)
• Parkhill, Forbes, Denver, Colo. (1924)
• Parks Printer, York, England. (1932)
• Parlette-Padget Company, Chicago, Ill. (1924)
• Parmenter, Christine Whiting, Colorado Springs, Colo. (1927-1934)
• Partners, Wilmington, Del. (1923)
• Patriot and the Evening News, Harrisburg, Pa. (1920)
• Pattullo, George, Dallas, Tex. (1922-1927)
• Payne, Elizabeth Stacy, Atlantic City, N.J. (1932)

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:

• Pickering, Winthrop H., Boston, Mass. (1917)
• Pickett, C.L., Chicago, Ill. (1919)
• Pictorial Printing Company, Aurora, Ill. (1916)
• Picture Story Paper, Cincinnati, Ohio. (1920)
• Pier, Arthur Stanwood, Concord, N.H. (1931-1932)
• Pierce, A.B., Ironton, Mo. (1914-1915)
• Pierce, Frank Richardson, Seattle, Wash. (1922-1934)
• Pierce and Zahn Book Company, Denver, Colo. (1915)
• Pierce's Farm Weeklies, De Moines, Iowa. (1923)
• Pierson, C.E., Chicago, Ill. (1913)
• Pilot, Boston, Mass. (1928)
• Pilot Publishing Co., Newark, N.J. (1926)
• Pin-ap-ola Company, New York, N.Y. (1915)
• Pinkerton, Robert E., Dutch Flat, Calif. (1931-1936)
• Pioneer, Philadelphia, Pa. (1932)
• Pioneer Direct Supply Co., Chicago, Ill. (1928)
• Pioneer Film Corporation, New York, N.Y. (1919)
• Pioneer Press, St. Paul, Minn. (1905-1907)
• Pioneering, Detroit, Mich. (1935)
• Piper, A.M., Des Moines, Iowa. (1927)
• Pipp, E.G., Detroit, Mich. (1920-1930)
• Pippen, William V., Baltimore, Md. (1912)
• Pit and Quarry, Chicago, Ill. (1929)
• Pitkin, Walter B., New York, N.Y. (1922)
• Pitts, Alice Fox, Rockville, Md. (1935)
• Pittsburgh Automobilist, Pittsburgh, Pa. (1927)
• Pittsburgh Bulletin, Pittsburgh, Pa. (1915)
• Pittsburgh Chronicle Telegraph, Pittsburgh, Pa. (1906-1921)
• Pittsburgh Leader, Pittsburgh, Pa. (1917)
• Pittsburgh Sun, Pittsburgh, Pa. (1924-1927)
• Pittsburgh Sun Telegraph, Pittsburgh, Pa. (1930)
• Plains Agriculture Journal, Lubbock, Tex. (1922)
• Playgoer, Chicago, Ill. (1925-1930)
• Playgoer, Detroit, Mich. (1927)
• Play Mate, Cleveland, Ohio. (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:

• Practitioner, London, England. (1935)
• Prairie Farmer, Chicago, Ill. (1914-1937)
• Prairie Motorist, Calgary, Alta. (1927)
• Pratt, C.S., New York, N.Y. (1915)
• Pratt, John Lowell, New York, N.Y. (1934)
• Presbyterian Advance, Nashville, Tenn. (1926-1927)
• Presbyterian Banner, Pittsburgh, Pa. (1924-1932)
• Presbyterian Committee of Publication, Richmond, Va. (1931)
• Present, New York, N.Y. (1932-1933)
• Press Service, Inc., New York, N.Y. (1937)
• Preston, Keith, Chicago, Ill. (1923)
• Preview, Chicago, Ill. (1925)
• Price, Edith Ballenger, Newport, R.I. (1931)
• Price, Emma D., Baltimore, Md. (1938)
• Price, Frank J., Newark, N.J. (1934)
• Price, Wesley, New York, N.Y. (1936)
• Printed Salesmanship, Chicago, Ill. (1929)
• Printer's Ink Publishing Company, New York, N.Y. (1926-1940)
• Pritchett, Mary Leonard, New York, N.Y. (1938)
• Procter & Gamble Co., Cincinnati, Ohio. (1928)
• Progress, Kansas City, Mo. (1933-1937)
• Progressive Publishing Co., Muscatine, Iowa. (1930)
• Progressive State Labor Journal, Joliet, Ill. (1930)
• Prouty, Olive Higgins, Brookline, Mass. (1932-1936)
• Providence Journal, Providence, R.I. (1922)
• Providence Tribune, Providence, R.I. (1919-1920)
• Providence Visitor, Providence, R.I. (1924)
• Prudential Insurance Company of America, Newark, N.J. (1934)
• Psychology, New York, N.Y. (1930)

Correspondence to or from:

• Publication Corporation, Chicago, Ill. (1940)
• Publicist, New York, N.Y. (1923)
• Publishers Autocaster Service, New York, N.Y. (1928-1932)
• Publishers' Circular, London, England. (1930)
• Publishers' Syndicate, Chicago, Ill. (1934)
• Pueblo Business Service, Pueblo, Colo. (1930)
• Pullman News, Chicago, Ill. (1923-1928)
• Pulver, Mary Brechdt, New York, N.Y. (1932)
• Pure Iron Era, Middletown, Ohio. (1929-1930)
• Pure Oil News, Columbus, Ohio. (1928-1930)
• Purina Mills, St. Louis, Mo. (1927)
• Purse Company, Chattanooga, Tenn. (1933-1935)
• Putnam, Nina Wilcox, Madison, Conn. (1926-1930)
• Pythian, Jefferson City, Mo. (1927)
• Pythian Sister Tidings, Ann Arbor, Mich. (1925-1930)

Correspondence to or from:

• Queen City Book Company, Cincinnati, Ohio. (1914)
• Queen City Motorist, Cincinnati, Ohio. (1927)
• Queen of the West, Chicago, Ill. (1905)
• Quick, Herbert, Berkeley Springs, W.Va. (1916-1922)
• Quill, Toronto, Ont. (1923)
• Quinby, T.E., Port Austin, Mich. (1913)
• Quinn, James J., Ruxton, Md. (1912)
• Quirk, Emma E., Madison, Wis. (1918)
• Quirk, James R., Los Angeles, Calif. (1916)
• Quirk, Leslie W., New York, N.Y. (1909-1913)