Id Url Resource class Title Description Source https://policing.umhistorylabs.lsa.umich.edu/s/detroitunderfire/item/5500 Ad-Hoc Police Training Program 1970 Ad-Hoc Action Group, Police Observation Training Program, Jan. 1970, Box 38, Folder 13, MaryAnn Mahaffey Papers, Walter P. Reuther Library, Archives of Labor and Urban Affairs, Wayne State University