Post route map of the state of Minnesota : with adjacent parts of Iowa, Nebraska, Dakota, Wisconsin and of the British possessions : showing post offices with the intermediate distances between them and mail routes in operation on 1st October 1883

Public domain image of the vintage map from NYPL Lionel Pincus and Princess Firyal Map Division, free to use, no copyright restrictions image. The Lionel Pincus and Princess Firyal Map Division is one of the world’s premier map collections in terms of size, scope, unique holdings, diversity, and intensity of use. Established in 1898, our holdings include more than 433,000 sheet maps and 20,000 books and atlases - Picryl description