Report 247 By C.R. Baskin | May 1980
- Report 247 - Modern Topographic Mapping of Texas
- Figure 1 - Status of Topographic Mapping in Texas December 31, 1978
- Figure 8 - Authorization Dates of 7 1/2-Minute Mapping in Texas, 1947-1978
- Figure 9 - Completion Dates of 7 1/2-Minute Mapping in Texas, 1949-1978