1. Sketch of the Aleutian Islands : to illustrate Appendix no. 11, 1873 Maps University Of Minnesota Public content 1873. United States Coast Survey. Relief shown by hachures and spot heights. Depths shown by soundings.; "No. 17."; "Coast Survey report for 1873." 42 x 71 centimeters Scale 1:2,400... U.S. Coast Survey (Washington).