Cite
MLA
Geological Survey (U.S.) (cartographer). Texas (Harris County) Swanson quadrangle. - University of Texas Libraries Collections. 1939-01-01. https://collections.lib.utexas.edu/catalog/utlmaps:23385f74-bbf7-46c2-a36e-eeae958930ecAPA
Geological Survey (U.S.) (cartographer). (1939-01-01). Texas (Harris County) Swanson quadrangle.. Retrieved June 14, 2026, from https://collections.lib.utexas.edu/catalog/utlmaps:23385f74-bbf7-46c2-a36e-eeae958930ecChicago
Geological Survey (U.S.) (cartographer). Texas (Harris County) Swanson quadrangle.. 1939-01-01. "Texas (Harris County) Swanson quadrangle. – Collections". University of Texas Libraries Collections. <https://collections.lib.utexas.edu/catalog/utlmaps:23385f74-bbf7-46c2-a36e-eeae958930ec> (14-June-2026).Note that these citations have been automatically generated, please verify that citation is correct and contains all necessary information.