Post route map of the states of Oregon and Washington with adjacent states of Idaho, Nevada, California and British Columbia : showing post offices with the intermediate distances and mail routes in operation on the 1st of October 1891
Post route map of the states of Oregon and Washington with adjacent states of Idaho, Nevada, California and British Columbia
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Title:
Post route map of the states of Oregon and Washington with adjacent states of Idaho, Nevada, California and British Columbia : showing post offices with the intermediate distances and mail routes in operation on the 1st of October 1891
Also shows railroads and counties.
Relief shown by hachures and spot heights.
Prime meridians: Washington, D. C. and Greenwich.
"The service on this diagram brought up to date of Oct. 1st. 1891."