- U.S. Coast and Geodetic Survey
- Digital Commonwealth
- Boston Public Library
- The Survey
Relief shown by hachures and spot heights. Depths shown by soundings. Inset: Aleutian Islands. No. 960. Edition of 1887. Printed Jan. 1888"--lower left. Sent from the chart room: 10-10-88"--lower left. Date handwritten. U.S. Coast and Geodetic Survey.
- No known copyright restrictions. This work is licensed for use under a Creative Commons Attribution Non-Commercial Share Alike License (CC BY-NC-SA).