OKLAHOMA CITY, Okla.--(BUSINESS WIRE)--MidFirst Bank is proud to be a sponsor of "From These Lands: Sharing Our Natural and Cultural Heritage," a new exhibition opening June 18 at the Smithsonian's National Museum of Natural History in Washington, D.C. Stretching across 5,000 square feet, the exhibition brings together more than 600 specimens and cultural objects — many rare and never before exhibited — from all 50 states, the District of Columbia and five U.S. territories, celebrating the bread