McGill-Warner Co.Minnesota Highway Improvement Association.Cartographic Details: No scale given."Failure to vote on Amendment No. 1 is equivalent to voting against it.""Vote "yes" for constitutional amendment no. 1 on November 2, 1920."Includes text detailing the advantages of the plan.78 x 62 centimetersJPEGUMN_ALMA:9926219920001701engThe Association : McGill-Warner Co. (St. Paul, Minnesota), 1919PublicMap of Babcock Plan for a trunk highway system in MinnesotaMapsMinnesota1919University of Minnesota