Unpublished report on "Lake Boelela Echinoids," Port E. Africa based on fossils sent by L.S. Thompson, 1926, Box: 7, Folder: 2. Gilbert Harris papers, 14-5-4663. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/1932758 Accessed August 23, 2026.