Report on the Iowa Twenty-five Year Conservation Plan. Prepared for the Iowa Board of Conservation and the Iowa Fish and Game Commission. Des Moins, Iowa, Wallace-Homestead Co. Transferred to Mann Library, New York State School of Agriculture, Cornell. Crane, Jacob, 1933, Box: 3. Jacob Leslie Crane papers, 2646. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/372842 Accessed May 13, 2026.