- Thomas Bros.1
- Thomas, Geo. C.1
- Tishman Cahill1
- Tishman Cahill Renewal Associates1
- Treskot, Johann, 1719-17861
- USGS National Center for EROS1
- United States. Central Intelligence Agency1
- United States. Circuit Court (California : Northern District)1
- United States. Forest Service1
- United States. Office of Strategic Services1
- University of Minnesota. Institute on the Environment1
- Valeriani, Joseph.1
- Viele, Egbert L. (Egbert Ludovicus), 1825-19021
- Vioget, Jean Jacques, 1797-18551
- Virtue, George, 1793?-18681
- Wall, Walter E.1
- Waters, H.1
- Wauthier, J.M.1
- Weiland, C. F. (Carl Ferdinand), 1782-18471
- Weller, Edward, d. 18841
