The Yosemite National Park poster was produced by Ford Craftsman Studios in the style of the original WPA posters, which were created for the National Park Service through the arts program of the Works Project Administration, or WPA. Heavy stock paper was used to produce a non-reflective matte finish for a look and feel of the original silk screened posters. Please check our other items for a high quality frame for this poster. The poster is in a quarter sawn white oak frame made of hand selected wood by our friends at Dard Hunter Studios.