Id Url Resource class Title Description Source https://policing.umhistorylabs.lsa.umich.edu/s/crackdowndetroit/item/6286 State of Emergency Committee Poster State of Emergency Committee Poster, n.d. [spring 1972], Box 24 Oversized Materials, Kenneth V. and Sheila M. Cockrel Collection, Walter P. Reuther Library, Archives of Labor and Urban Affairs, Wayne State University