1917 North Platte Project, Wyoming-Nebraska, by Andrew Weiss, project manager ; prepared in the Washington Office under direction of J.H. Pellen, US Dept. of the Interior, from the Digital Commonwealth - commonwealth 4m90fb29k. (<a rel="nofollow" class="external free" href="https://www.digitalcommonwealth.org/search/commonwealth:4m90fb29k">https://www.digitalcommonwealth.org/search/commonwealth:4m90fb29k</a>)
Andrew Weiss, project manager ; prepared in the Washington Office under direction of J.H. Pellen, US Dept. of the Interior
Digital Commonwealth