R
- Railroad accidents--Mexico (3)
- Railroad accidents--Texas (8)
- Railroad stations--Texas--Brownsville (1)
- Railroad stations--Texas (111)
- Railroads--Mexico (3)
- Railroads--Texas (126)
- Raymondville, Texas (36)
- Revolutions--Mexico (313)
- Rio Grande City, Texas (21)
- Rio Grande Valley (565)
- Rio Grande (741)
- Roads--Texas (36)
- Roosevelt, Franklin D. (Franklin Delano), 1882-1945 (1)
- Runyon children (1)
- Runyon family (348)
- Runyon, Robert, 1881-1968 (7)