| Zoroaster from the depths of the Grand Canyon | Frontispiece |
| Facing Page |
| The Rainbow Natural Bridge, Utah | 8 |
| Middle fork of the Belly River, Glacier National Park | 12 |
| General Grant Tree | 18 |
| The Giant Geyser—greatest in the world | 22 |
| The Yosemite Falls—highest in the world | 26 |
| El Capitan, survivor of the glaciers | 44 |
| Half Dome, Yosemite's hooded monk | 46 |
| The climax of Yosemite National Park | 56 |
| The greatest waterwheel of the Tuolumne | 56 |
| Tehipite Dome, guardian rock of the Tehipite Valley | 82 |
| East Vidette from a forest of foxtail pines | 84 |
| Bull Frog Lake, proposed Roosevelt National Park | 90 |
| Under a giant sequoia | 90 |
| Estes Park Plateau, looking east | 96 |
| Front range of the Rockies from Bierstadt Lake | 96 |
| Summit of Longs Peak, Rocky Mountain National Park | 110 |
| The Andrews Glacier hangs from the Continental Divide | 114 |
| A Rocky Mountain cirque carved from solid granite | 114 |
| Mount McKinley, looming above the great Alaskan Range | 128 |
| Archdeacon Stuck's party half-way up the mountain | 128 |
| The summit of Mount McKinley | 128 |
| In Lafayette National Park | 134 |
| Sea caves in the granite | 134 |
| Frenchman's Bay from the east cliff of Champlain Mountain | 140 |
| Lassen Peak seen from the southwest | 152 |
| Lassen Peak close up | 152 |
| Southeast slope of Mount Rainier | 162 |
| Mount St. Helens seen from Mount Rainier Park | 166 |
| Mount Adams seen from Mount Rainier Park | 166 |
| Sluiskin Ridge and Columbia Crest | 172 |
| Mount Rainier seen from Tacoma | 172 |
| Mount Rainier and Paradise Inn in summer | 174 |
| Winter pleasures at Paradise Inn, Mount Rainier | 174 |
| Dutton Cliff and the Phantom Ship, Crater Lake | 190 |
| Sunset from Garfield Peak, Crater Lake National Park | 190 |
| Applegate Cliff, Crater Lake | 194 |
| Phantom Ship from Garfield Peak | 194 |
| The Excelsior Geyser which blew out in 1888; Yellowstone | 216 |
| One of the terraces at Mammoth Hot Springs, Yellowstone | 216 |
| Yellowstone Valley from the upper fall to the lower fall | 220 |
| The lower fall and the Grand Canyon of the Yellowstone | 220 |
| The Teton Mountain from Jackson Hole, south of Yellowstone | 228 |
| The lava landscape of the Yellowstone and Gibbon Falls | 228 |
| The Kilauea Pit of Fire, Hawaii National Park | 238 |
| Within the crater of Kilauea | 238 |
| The Great Gable of Gould Mountain | 272 |
| The Cirque at the head of Cut Bank Creek | 272 |
| Ptarmigan Lake and Mount Wilbur, Glacier National Park | 276 |
| Scooped both sides by giant glaciers | 276 |
| Showing the Agassiz Glacier | 282 |
| Beautiful Bowman Lake, Glacier National Park | 282 |
| Prehistoric pottery from Mesa Verde | 298 |
| Sun Temple, Mesa Verde National Park | 302 |
| Spruce Tree House from across the canyon | 302 |
| On Hot Springs Mountain, Hot Springs of Arkansas | 308 |
| Bath House Row, Hot Springs of Arkansas | 308 |
| Sunset from Grand View, Grand Canyon National Park | 340 |
| Camping party on the South Rim | 344 |
| Down Hermit Trail from rim to river | 344 |
| Through the Granite Gorge surges the muddy Colorado | 346 |
| When morning mists lift from the depths of the Grand Canyon | 346 |
| El Gobernador, Zion National Monument | 362 |
| Zion Canyon from the rim | 364 |
| The Three Patriarchs, Zion Canyon | 364 |
| Casa Grande National Monument | 374 |
| Prehistoric cave homes in the Bandelier National Monument | 374 |
| Tumacacori Mission | 376 |
| Montezuma Castle | 376 |
| Roosevelt party in Monument Valley | 386 |
| Rainbow Bridge in full perspective | 386 |
| The Petrified Forest of Arizona | 396 |
| Petrified trunk forming a bridge over a canyon | 396 |
| Cathedral Isle of the Muir Woods | 406 |
| Pinnacles National Monument | 412 |
| The Devil's Tower | 412 |
