1. Post route map of the territories of Montana, Idaho, and Wyoming with parts of adjacent states and Creator: United States. Post Office Dept Published / Created: [1883] Call Number: 831gmd 1883 Container / Volume: BRBL_00581 Image Count: 2 Resource Type: Maps, Atlases & Globes Publisher: The Dept., Subject (Name): Roeser, C. (Charles) Subject (Topic): Postal service--Idaho--Maps, Postal service--Montana--Maps, and Postal service--Wyoming--Maps Found in: Beinecke Rare Book and Manuscript Library > Post route map of the territories of Montana, Idaho, and Wyoming with parts of adjacent states and territories : showing post offices with intermediate distances between them and mail routes in operation on 1st October 1883 / published by order of Postmas