- General Soil Map, Smith County, Texas
- Map displays soil types along with creeks, towns, schools, churches, power transmission lines, oil and gas pipelines, roads, and railroads. Includes legend and symbols. Scale 1:253,440. texashistory.unt.edu/ark:/67531/metapth130320/
- Soil map, Texas, Smith County sheet
- Map displays soil types along with creeks, lakes, rivers, towns, schools, churches, stores, roads, and railroads. Includes legend and symbols. texashistory.unt.edu/ark:/67531/metapth19673/
- Soil survey of Smith County, Texas
- Text describes the area, climate, agriculture, and soils of Smith County, Texas. texashistory.unt.edu/ark:/67531/metapth19836/
- Soil Survey of Smith County, Texas
- Text describes the area, climate, agricultural history and statistics, soil-survey methods and definitions, soils and crops, land uses and agricultural methods, irrigation, and morphology and genesis of soils of Smith County, Texas. texashistory.unt.edu/ark:/67531/metapth130247/