Relief shown by spot heights.; Stamped in top right corner of map recto: "Drawing no. 352, City Engineer's Office. Vault no. 1, Case no. 1, Drawer no. C1."; At top center of map verso: "C1 352 Grade sheet City of Mpls 1880."JPEGengPublicCity PlanningGrading (Earthwork)Plan of grades in the city of MinneapolisMapsMinnesota--MinneapolisMinnesota--Hennepin CountyMinnesotaUnited StatesUniversity of Minnesota