The papers of George Laird Shoup span the years 1861 to 1958, with the bulk of the material covering the years 1866 to 1904.

The majority of the material is concerned with Shoup's merchandising business. Included are business records and correspondence, financial records, printed material such as newspaper clippings, speeches and reports, and photocopies of journals and a letter, and early photographs of Salmon, Challis, and the Shoup family and friends.

Although there is little in the way of political correspondence in this collection, a number of letters from Senator Shoup to Judge Weldon B. Heyburn on the subject of Idaho politics can be found in the Heyburn papers (MG 6) in the University of Idaho Library, Special Collections Department.