Map of the Animal Regions, Warren, 1873

Map of Oregon coast from California boundary to Tillamook Bay, 1888

Map of Tennessee, Northern Georgia, and Alabama, 1888

Map of California Coast from San Diego to Point Dume, 1888

Map of the Straits of Florida and Gulf of Mexico, Andrews, 1852

Atlanta Base to the Gulf of Mexico and Triangulation in Tennessee, 1893

Surveys and Resurveys Between the St. Croix and Hudson Rivers, 1893

Triangulation between West Virginia and Eastern Missouri, 1893

Progress of the Triangulation Between Eastern Utah and Western Nevada, 1894