Printed caption: 14020 Aster Machaeranthera Bigelovii, Yellowstone Park Haynes." Typed caption on verso, "91215 Post card Aster (Machaeranthera Bigelovii) is a fall flower beginning early in July. In Yellowstone Park there are many kinds of Asters, blossoms varying from one-quarter of an inch to over tow inches in diameter. Of all wild flowers in the Park more than 600 different species have been identified. Copyright by Haynes Picture Shops, Inc., 341 Selby Ave., St. Paul, Minn. and Yellowstone Park, Wyoming".
