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Subject
- Rayburn, Sam, 1882-1961.1
- Rio Grande (Colo.-Mexico and Tex.)1
- Rio Grande (Colo.-Mexico and Tex.)--Aerial film and video footage.1
- Rivers.1
- Rocky Mountains--Aerial film and video footage.1
- Rodeo riders.1
- Scenic Airways.1
- Spanish language.1
- Speeches, addresses, etc., Spanish--United States.1
- Texas--History.1
- Thomas, Elmer, 1876-1965.1
- United States--Relations--Mexico.1
- Waterfalls.1
- Zoo animals.1
- Zoos.1