Kansas African American history -- Nicodemus, book, Promised Land on the Solomon: Black Settlement at Nicodemus, Kansas, National Park Service, n.d, Box: 6, Folder: 24. Robert C. Caldwell family papers, RH MS 627. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/272765 Accessed May 18, 2024.