Philadelphia County, Penn's Treaty Elm and Monument, Philadelphia, Pa., William Penn, A Mural Painting by N.C. Wyeth, located in the Home Office Building of the Penn Mutual Life Insurance Company, Independence Square, 0879B
postcard, 3 1/2 in. x 5 1/2 in.; This collection of approximately 29,000 postcards from the 1880s to the 1970s includes images from across the U.S. and all 67 Pennsylvania counties and highlights cities, towns, buildings, local businesses and industries, parks, and scenic and street views. Additional images include business and industry advertising, highways, states, and foreign countries.