Yellowstone National Park. Ranger Naturalist Service. Old Faithful erupts in this National Park Service silkscreen for Yellowstone National Park circa 1938. From the Vintagraph collection this Yosemite By Airliner Vintage Metal Sign measures 12 inches by 18 inches and weighs in at 2.07 lb(s). This Vintage Metal Sign is hand made in the USA using heavy gauge American steel.