Id Url Resource class Title Description Source https://policing.umhistorylabs.lsa.umich.edu/s/detroitunderfire/item/5173 DPD Report of Incident at Denby and Osborn High Schools, April 1970.pdf DPD, Preliminary Report of Incident at Denby and Osborn High Schools, April 13, 1970, Box 26, Folder 7, Michigan Civil Rights Commission, Records Relating to Detroit Police Department, RG 74-90, Michigan State Archives