Upon retirement as editor-in-chief, Field & Stream, 1941

There is no comprehensive collection of materials pertaining to and arising out of Holland's rich life. However, the materials described here and held at Wesleyan University do touch, in some measure, nearly every part of his long career. The bulk of the collection contains manuscripts, field diaries, publications, reports, silent films, artworks, and books related to wildlife conservation and game protection in the United States, from 1903 to 1970. It also contains a small amount of diaries, scrapbooks, correspondence and personal family items spanning 1872 to 1970.