This collection consists of the papers of John Jacob Thompson, Sarah Travers Thompson, Stewart McKinley Thompson, Anita Travers Thompson, Anna Travers, Margaret Travers Ginste, and J.J. Ginste.

The papers of John Jacob Thompson (1884-1907) include correspondence, primarily incoming with some outgoing to his wife, which discusses: financial matters, especially the payment of rent in Great Falls; business; family; Great Falls; California; etc. Thompson's papers also include naturalization papers, a bank book, a diary/note book, a land sale contract, and a dues book of the Modern Woodman of America.

Sarah Travers Thompson's papers (1907-1908) include correspondence and invoices concerning John Jacob Thompson's estate and funeral.

Anna Travers' papers (1908-1914) include correspondence and invoices concerning the boarding of Sarah Travers Thompson in a sanatorium and her funeral, and John Jacob Thompson's estate.

Margaret Travers Ginste's papers (1914-1923) include financial papers; outgoing correspondence, primarily to Stewart McKinley Thompson concerning family matters and events in Great Falls; and one letter from Maude Thompson.

J.J. Ginste's papers (1921-1926) consist of a letter from the Montana Power Company regarding Stewart McKinley Thompson's death; a motor registration and certificate of insurance.

Stewart McKinley Thompson's papers (1912-1925) include correspondence with Anita Travers Thompson, Margaret Travers Ginste, his friends, and future wife concerning student life and his work; diaries with brief comments about the weather, recreational activities, school, work at the substation at Canyon Ferry, etc.; school grade reports; union and lodge cards; financial records; etc.

The papers of Anita Travers Thompson (1904-1925, 1978) include correspondence with Stewart McKinley Thompson and Margaret Travers Ginste about student life; high school grade reports, college dance cards, invitations to parties, place cards, programs for concerts and plays, diaries, school certificates, etc.