Id Url Resource class Title Description Source https://policing.umhistorylabs.lsa.umich.edu/s/detroitunderfire/item/5518 Ad-Hoc Action Group on Political Police-longer excerpt Ad-Hoc Newsletter, July 1969, Box 38, Folder 14, MaryAnn Mahaffey Papers, Walter P. Reuther Library, Archives of Labor and Urban Affairs, Wayne State University