S. Thaxter & Son. "Samuel Thaxter & Son, manufacturers and importers of nautical and optical instruments, charts and nautical books; publishers of Eldridge's charts and coast pilots; agents for U.S. Coast Survey & Hydrographic Office charts & books." Print. Boston: publisher not identified, [ca. 1900–1910]. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:0r96fq47r (accessed April 25, 2024).