Transmission Systems of the Public Service Company of Oklahoma Area and Indian Electric Cooperative, Inc.1948-08-28unknownhttp://rightsstatements.org/vocab/NKC/1.0/enghttp://congressarchives.org/record/CAC_CC_053_4_0000_1_109Create a concise and logical summary: This coverage map, produced by the Public Service Co. of Oklahoma's Engineering Department, illustrates county lines and major cities in the Northeast corner of Oklahoma. Dimensions: Not specified in the provided data.