| Beaver World | Frontispiece |
| A Young Beaver on the side of a Beaver House | 6 |
| A Young Beaver Sunning Himself | 22 |
| In the Harvest-Field | 32 |
| Aspens cut by Beaver. |
| Beaver Ponds | 42 |
| A New Dam | 66 |
| Part of an Old Dam 1040 Feet Long | 78 |
| The Spruce Tree House and Food-Pile, October 12 | 92 |
| Lake-Bed Canals at Lily Lake, October, 1911 | 102 |
| Section of a 750-foot Canal at Lily Lake | 102 |
| Plan of Beaver Colony on Jefferson River, near Three Forks, Montana | 108 |
| An Unplastered and a Plastered House | 124 |
| The 334-foot Canal | 140 |
| Plan of Moraine Colony, with Dead-Wood Dam | 144 |
| The Dead-Wood Dam | 148 |
| The Moraine House before and after Enlargement | 168 |
| House in Lily Lake | 180 |
| House, Food-Pile, Pond, and Dam in Winter | 198 |
| Where Beaver formerly lived and spread Soil | 218 |
