This collection is an English drafting tools set that was originally owned and used by Brigham Young to design the streets and building plans for Salt Lake City, Utah. The set was also used by Oliver I. Lay for the creation of a studio commissioned by his father-in-law, Mahonri Mackintosh Young, to create the This is the place monument. Materials dated approximately 1847-1877.

Family members have a memory of Mahonri jotting down thoughts and arranging and rearranging earlier notes for the purpose of writing his life story. Mahonri’s material is arranged in alphabetical order with titles as he named the subjects. Material is undated.

Contains materials and documents relating to Mahonri Mackintosh Young's preparations to write an autobiography. Undated.

Newspaper clippings on Mahonri Mackintosh Young's life and carreer, dated 1898 to 1957.

Contains drafts, certificates, and other writings, dated 1907 to 1955.

Reference files on people collected by Mahonri Mackintosh Young containing images and articles on a wide variety of persons and subjects, including artists, authors, journalists, illustrators, cartoonists, sculptors, architects, and politicians, and on other topics. The folders in this series are identified by name rather than by folder number. Undated.

Subject reference files collected by Mahonri Mackintosh Young, undated.

Contains Mahonri Mackintosh Young's research files on various artists and subjects, as well as audubon plates and their reprints, undated.

Correspondence, sketchbooks, research files, autobiographical files, scrapbooks, and news clippings. Also includes diaries, address and memorandum books, and financial records. Most letters were exchanged with family members and close friends. Primary correspondents included his son, Mahonri Sharp Young; his first wife, Cecilia Sharp Young; and Mary Lightfoot Tarleton, whom he met in Paris after Cecilia died in 1917. Research files include extensive information on other artists.

Correspondence, sketchbooks, research files, autobiographical files, scrapbooks, and news clippings. Also includes diaries, address and memorandum books, and financial records. Most letters were exchanged with family members and close friends. Primary correspondents included his son, Mahonri Sharp Young; his first wife, Cecilia Sharp Young; and Mary Lightfoot Tarleton, whom he met in Paris after Cecilia died in 1917. Research files include extensive information on other artists.