USGS Map Series
Code: Name

01  : USGS 1:25,000 Topographic Series
02  : USGS 1:50,000 Topographic Series
03  : USGS 1:250,000 Topographic Reconnaissance Series
04  : USGS 1:250,000 Topographic Flightline Series
05  : USGS 1:500,000 Topographic Reconnaissance Series
06  : USGS 1:1,000,000 International Map of the World
07  : USGS Geologic Reconnaissance Series
08  : USGS Sketch Maps
09  : USGS Satellite Image Maps
10  : USGS Photoimage Maps
11  : USGS Geologic Investigations Series