Formal studio portrait in photographer's folder of William Lyon Mackenzie King, seated, by Champion Studios, New York, inscribed to Harvey J. Sims: "To H.J. Sims, from his friend, W.L. Mackenzie King, Ottawa, ‘Xmas 1922."

Letter from Mackenzie King dated June 6, 1930 to the aunts of Mabel Cameron Alguire, regretting that he is unable to attend her wedding to James Kenneth Davidson Sims on June 28, 1930 in Cornwall, Ontario.

Series consists of a single object, a suit of cashmere and wool undergarments owned and worn by William Lyon Mackenzie King.

Handwritten Air Letter from May King in England to William Lyon Mackenzie King on June 28, 1950, describing her trip to England and thanking him for his gift.

Salutation: "My dear Willie" [handwritten]; Signature: "ever affectionately May" [handwritten].

• Date and Place from: June 13, 1923 Montreal, Que. To Meighan, Arthur From Budd, Gertrude E. Notes: Ts. carbon, signed.
• Date and Place from: July 9, 1923 Ottawa, Ont. To Murphy, Evelyn From Unknown
• Date and Place from: Apr. 15, 1924 Edmonton, Alta. To King, William Lyon Mackenzie From Murphy, Emily F. Notes: Ts. carbon*
• Date and Place from: May 6, 1924 Ottawa, Ont. To Murphy, Emily F. From King, William Lyon Mackenzie Notes: Ts., signed.

File consists of material relating to the wedding of Lydia Louise Anthes and Albert B. Breithaupt held in Berlin (now Kitchener) in 1901. Includes a photocopy of an undated newspaper clipping about the wedding and a reproduction of a photograph of the wedding party and guests. William Lyon Mackenzie King was best man in the wedding and appears in the photograph.

Collection consists of material relating to William Lyon Mackenzie King from the estates of his brother Dougall Macdougall “Max” King and of his nephew (Dougall’s son) Arthur Macdougall King. Its major component is correspondence from Mackenzie King to Arthur King and also to Arthur’s wife Kathleen, over a period of twenty-seven years from 1923 to 1950.The first letter is dated 1923, a scant three years after the death of Max King, when Arthur and his twin brother Lyon were 10 years old and the last in the series is dated July 5, 1950. The collection also contains documents and ephemera relating to King’s death, funeral and will, received by Arthur King as a participant in those events; also present are issues of major Ontario newspapers that covered Mackenzie King's death and funeral as events unfolded day-by-day. A small selection of photographs, some formal and some snapshots, are also present. A selection of books retained by the family, among them works written and presented by John King and Dougall Macdougall King, also works owned by Mackenzie King as a boy, present a tangible reminder of the intellectual legacy of the King family.

One formal group portrait.

Back row, left to right: Senator Robb, N. Asmussen M.P.P., J.A. Scellen, W.T. Sass, Hon. James Malcolm, John A. Lang, W. Max Euler.

Middle row, left to right: W.J. Motz, Mr. King's secretary, H.J. Sims, Mrs. J. Cole, Mayor Greb, Premier King, Hon. W.D. Euler, Mrs. Peden Mielke, Mrs. Leonard Oliver, Senator Dr. Rankin.

Front row, left to right: Mrs. Max Euler, Miss Rankin, Mrs. W.D. Euler, Mrs. W.J. Motz.

Fonds consists of twelve daily diaries, intermittently spanning between 1907 and 1948, that contain entries pertaining to daily farm operations. Included, though unrelated, are two ledgers from a Berlin (Kitchener), Ontario general store for the years 1893 and 1907. Accounts listed include purchases by John King, father of William Lyon Mackenzie King, that help document the lifestyle of the King family while living at Woodside, now a National Historic Site.