USGS Public Land Survey System Land Grid Data- DDS's Public Land Survey is digitized from USGS 1:24,000 series topographic maps using a highly accurate spatial averaging digitizing technique, which captures corner boundaries to +/- 40 foot accuracies. The Wyoming resurveys are included and Carter townships are used for Kentucky and Tennessee.

Texas Land Survey Data-  Through a partnership with Whitestar, DDS’s Texas Land Survey is a seamless, high-resolution database of county boundaries, blocks, surveys, abstracts, subdivisions, lots, and tracts that is ideal for base maps and plotting land ownership and leases. The Texas Land Survey precisely overlays USGS Digital Orthophotos and Digital Raster Graphs, making it useful for indexing and analysis.