Dear Tim Pryor,
Thank you for posting your request on History Hub!
We suggest that you review the National Archives African American Research, the Kansas State Archives at https://www.kshs.org/p/state-archives-library/11933
Additionally, I would check with local sources. Here is an article from the Kansas Historical Society, “History of Lynchings in Kansas”, https://www.kshs.org/p/history-of-lynchings-in-kansas/12580.
You also probably will want to explore 1920s era newspapers from Kansas. Again, another link to the Kansas Historical Society, Kansas Digital Newspapers: https://www.kshs.org/p/kansas-digital-newspaper-program/16126
We hope this is helpful. Best of luck with your research!