Classification of the Petroleum and Natural Gas Resources of the United States1931-10-01unknownhttp://rightsstatements.org/vocab/NKC/1.0/enghttp://congressarchives.org/record/CAC_CC_053_4_0000_1_144Create a concise and logical summary using the title Geological Map by Earl A. Trager and the provided text: This map, created by consulting geologist Earl A. Trager, highlights regions for petroleum and natural gas production and exploration. It features annotations from the Oil Association on a separate sheet and is derived from Outsized Resources- Oil (n.d.). Dimensions: Not specified.