Relief shown by hachures and spot heights; depths shown by soundings. No. 712. "Astronomical & magnetic observations and topography by the party in the charge of Assist. George Davidson in 1867. The soundings are from Russian Authorities." ...
Relief shown by hachures and spot heights; depths shown by soundings. Inset: Aleutian Islands. Chart No. 960. "Interior 50 2." Published in 1884, reissued with additions in October 1887.
Published in [Washington D.C.] by U.S. Geodetic...
Relief shown by hachures and spot heights; depths shown by soundings. "Drawn by H. Lindenkohl." "Astronomical & magnetic observations and topography by the party in charge of Assist. George Davidson in 1867." "Reissued, with additions, Nov....