Position of Ponca City on National Air Lines1943-01-01unknownhttp://rightsstatements.org/vocab/NKC/1.0/enghttp://congressarchives.org/record/CAC_CC_053_4_0000_1_69Coverage map featuring Ponca City circled in red, with a separation sheet titled Exhibit F in Prospectus: U.S. Navy Hospital at Ponca City, Oklahoma. This item was removed from the Thomas (Elmer) Collection, specifically Outsized Materials for Projects: Ponca City (1943). Dimensions: 17 3/8 x 18 5/8