Relief shown by contours and spot heights. Alaska, Sheet No. 643. "Additional information from survey by Alaska Road Commission." Shows U.S. Telegraph line and stations. In color.
Published in [Washington, D.C.] by Geological Survey...
Relief shown by contours and spot heights. Alaska, Sheet No. 643. "Additional information from survey by Alaska Road Commission." Shows U.S. Telegraph line and stations. In color.
Published in [Washington, D.C.] by Geological Survey...