"Corrected to Jan. 1, 1960."; Shows traffic signals, automatic traffic signals, school signals, railroad signals, stop signs, slow signs, one-way traffic, no trucks over 3 tons, and thru streets & "danger corners".; Map is monochrome, but legend describes color coding to indicate maintenance by City Engineer, Park Board, or State.; "764" -- Written on map verso of Library's copy.JPEGengCity Engineer's Office (Minneapolis, Minnesota)PublicTraffic Signs and SignalsStreet traffic signs and signalsMapsMinnesota--MinneapolisMinnesota--Hennepin CountyMinnesotaUnited StatesUniversity of Minnesota