H. Rept. 116-439: Springfield Race Riot Study Act, Report to Accompany H.R. 139, Including Cost Estimate of the Congressional Budget Office, July 9, 2020 [open pdf - 366KB]
From the Purpose of the Bill: "The purpose of H.R. 139 is to direct the Secretary of Interior to conduct a special resource study of the site associated with the 1908 Springfield Race Riot in the State of Illinois."
H. Rept. 116-439; House Report 116-439
U.S. Government Publishing Office: http://www.gpo.gov/