Letters are primarily to White's mother, Alexina Black Mease White, his father, Richard Grant White, and his wife, Bessie Springs Smith White. The volume of White's letters from Mexico documents an extended trip he took with his elder brother, Richard Mansfield White, to prospect. Also included in the last volume is a letter to White from H. H. Richardson, dated February 22 1878, acknowledging White's resignation from Richardson's firm. Each original manuscript letter is followed by a typed transcription by Lawrence White, unless otherwise noted.

Album of photographs taken and purchased by Stanford White on a trip to France in 1878.

Also, typescripts of lectures delivered by Boring in architecture courses at Columbia, 1932-1933, miscellaneous typescripts of articles and printed materials, 1930-1933, and a typescript of Boring's autobiography, MEMORIES OF THE LIFE AND WORK OF WILLIAM A. BORING, circa 1937. Also included are four sketches by Henri Gauthier, Edward Tilton, Maurice Sashin, and Joseph Laudin.