N National parks [74]-77 Nighthawk [45] Nuthatch, white-breasted [44], [45]
O Owl, screech [13]; burrowing, [55], [61]
P Porcupine [37] Prairie dogs [28], [29], [50]-65 passim, [71]; photos [12], [48]-49, [54], [55], [56], [57]
R Raccoon [37] Ripley, Willard [12], [14], [16] Rogers, William [12], [14], [16] Roosevelt, Theodore [17] Roosevelt National Park, Theodore [52], [77] Rowell, Galen [30], [31]
S Showacre, Joan [15] Squirrel, ground [37]
T Trees [9], [29], [36], [40], [41]
W Warren, Francis E. [12] Weasel, longtail [37] Wiessner, Fritz [15] Willig, George [16], [72] Wind Cave National Park [52], [74] Woodpecker, red-headed [45] Wyoming [9]-10, [11]-12
Y Yellowstone National Park [76], [77]
For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.
Stock Number 024-005-00810-1.
★GPO: 1981—341-611/2