RTH initials, 1899
Detailed Description
Robert Hill, Father of Texas Geology, carved initials from his 1899 Rio Grande field survey. Photo was taken during 2002 USGS Rio Grande field trip.
Sources/Usage
Public Domain.
Robert Hill, Father of Texas Geology, carved initials from his 1899 Rio Grande field survey. Photo was taken during 2002 USGS Rio Grande field trip.
Public Domain.