Idaho, Montana, Wyoming / [prepared for] Sinclair.Rand McNally and Company[1960]"0-5648-6."At head of title: Sinclair.Includes indexes, ill., insets of "Waterton-Glacier International Peace Park, Alta.-Mont." and "Yellowstone and Grant Teton national parks, Wyo.," distance table, 3 local route maps, and text.Relief shown pictorialcartographic