 | Lewis and Clark's Corps of Discovery. The images include scenes of undeveloped landscapes that approximate the conditions viewed by the Corps, as well as areas that have been developed (e.g., cities, power facilities). These provide a sense of the land use changes that have occurred over the 200 years since the Corps started their journey to the Pacific Ocean. |
| Oregon and California Trails. The first wheeled wagon to Oregon traveled in 1836. Five years later, the first overland emigrants with wagons went to California. Thousands followed on both trails. The routes in many areas are still little developed, and thus the images often approximate what the travelers saw. |
| Astorians. The Astorians, a private venture financed by John Jacob Astor, was the next major expedition across the U.S. after Lewis and Clark. The images follow the westbound route of the Hunt party, which reached the mouth of the Columbia River in 1812, and the eastbound trip of the Stuart party, which left in the same year to return to New York. |
| Fremont's western expeditions. John C. Fremont led five major expeditions into the American west from 1842 to 1854. |
| Handcart companies. From 1856 to 1860, the handcart companies walked the most remarkable U.S. migration, with the about 3000 members pulling two-wheeled handcarts over 1000 miles across the plains and the Continental Divide. Two companies in 1856 suffered the greatest loss of life of any emigrant company in the snow before the Divide. |
| Missouri River. Native Americans used the river for over 10,000 years before Lewis and Clark traveled up the river in 1804-5. Today, much of the river is changed because of dam and channel construction, and local development. These images show undeveloped as well as developed areas. |
| Columbia River. Native Americans also occupied its shores for over 10,000 years before Captain Robert Gray sailed over the sandbars at the river's mouth. The Lower Columbia has changed considerably since the passage of Lewis and Clark. The images present a mix of areas with little change, and of major change. |
| Deschutes Country. In Oregon, the Deschutes River and its tributaries flow through a land formed by millions of years of intermittent volcanic activity. These images show also the additional influences of other natural and man-made processes. |
| Mountain ranges. They are an inspiration, and the sources for many of the world's great rivers. Current images are from the Himalaya, Sierra Nevada, and Cascades. |
Because some images are applicable to multiple subjects, they appear in multiple galleries.
Some galleries are works-in-progress, and additional galleries are under development. Digital images and fine art prints may be purchased by contacting David Lincoln, who is available for photography assignments, and presentations. He would also be pleased to work with museums and others interested in developing exhibits.