Relief shown by hachures; depths shown by soundings. Annotation in upper left margin: No. 726. From a survey by Act'g. Assist. W.H. Dall and party in July, 1873.
Published in [Washington D.C.] by United States Coast Survey in...
Shows Attu Island east to Unimak Island. Relief shown by hachures and spot heights; depths shown by soundings. "Shorelines from Gibson and Kuprianoff with corrections of positions and many details from observations by the party in charge of W.H....