Journals, notebooks, research material, and typescripts of books and articles reflecting Larrison's zoological activities; his collecting of literary materials, particularly those relating to Sir Walter Scott; family papers, including photographs which belonged to his mother; and photographs, slides, and motion picture films of birds, animals, and wildlfowers.

Professional papers, lecture and class notes (1922-1974); some personal correspondence (1898-1967); photographs and scrapbooks (1880-1971); artwork; and amateur printing samples.