- Platts9
- Champion Map Corporation,3
- Champion Map Corp. ;2
- H.M. Gousha ;2
- H.M. Gousha,2
- The Survey ;2
- ADC,1
- Champion Map Corp.,1
- Geological Society of America,1
- N.C. Geological Survey,1
- The Survey,1
- U.S. Dept. of Commerce, NOAA, NOS, Coast Survey ;1
- U.S. Dept. of the Interior, U.S. Geological Survey ;1