Images

Members of the 1930s burrowed and cholla eruptions were visible in 1941 as well as new mesquite plants that were already quite large. (Photographer unknown).

This northeast-looking photograph, on the southeastern side of White Thunder Ridge ,shows the lower reaches of Muir Glacier, then a large tidewater calving valley glacier, and its tributary Riggs Glacier. The séracs in the lower right-hand corner of the photograph mark Muir Glacier’s terminus. The ice thickness is more than 700 meters.

This August 1941 photograph is of Muir Glacier in Glacier Bay National Monument, Alaska. It shows the lower reaches of Muir Glacier, then a large, tidewater calving valley glacier and its tributary, Riggs Glacier. For nearly two centuries before 1941, Muir Glacier had been retreating. In places, a thickness of more than two-thirds of a mile of ice had been lost.

A mounted topographic field party poses while working on the Dos Cabezas quadrangle in Arizona. 1940-1941. The quadrangle was surveyed by D.H. Rutledge, W.E. Burton, and G.K. Jensen, so it is likely that most or all of them are in this photo.

In 1940, the gaging station for the San Carlos River was on a railroad bridge south of the little town of Peridot. This downstream view from that bridge shows the gage house on the extreme left and a safety railing next to it. The channel is wide following a flood, and scattered Frémont cottonwood trees are along channel right.

Image scan of a historical bird migration card.

A Portrait of George Rogers Mansfield. Washington, D.C. 1934. Mansfield was a geologist.

U.S. Geological Survey streamflow-gaging station 08110500 Navasota River near Easterly, Texas, looking upstream, June 7, 1934.

SIR 2009–5174

Image scan of a historical bird migration card.

Topographer George Stanley Druhot with a plane table and alidade. Recorder R.H. Moore is sitting against the Pierce Arrow in the background. A stadia rod is visible on the second car.

A topographer maps the north half of the Lovelock 1-degree quadrangle in the desert area near Jungo, Nevada. The umbrella protected the instrument from temperature variations.

A topographic field party crossing a snowdrift at the head of Grand Creek above their camp near Moose Lake while mapping the Mt. Constance quadrangle in the Olympic Mountains of Washington.

A USGS topographer works with a plane table and alidade to create a 1:180,000 scale topographic map near Imlay, Nevada. The umbrella is to protect the instrument from temperature variations.

Topographer George Stanley Druhot working with a tripod, planetable, and alidade at Kahekili Leap, on the island of Oahu. His two companions are Malcolm Springer and Tai Hai Lau

Two topographers working with an alidade and plane table. The man on the right is believed to be Roland Whitman Burchard, who was the topographer for the USGS Grand Canyon Expedition of 1923. Author Lewis Freeman described Burchard as a man of "powerful physique, great endurance, and a cool, steady hand."

Topographer George Stanley Druhot running a level line on oil-shale cliffs north of the Colorado River. The level line was one mile long and climbed 2,000 feet over talus slopes.

R.R. Monbeck on the rim of Haleakala volcano on the island of Maui

September 21, 1923, 9:00 a.m. --- Colorado River at Lees Ferry. From right bank on line with Klohr's house and gage house. Old "Dugway" or inclined gage shows to left of gage house. Gage height 11.05', discharge 27,000 cfs. Lens 16, time =1/25, camera supported. Photo by G.C. Stevens of the USGS. Source: 1921-1937 Surface Water Records File, Colorado R.

The Grand Canyon survey party at Lees Ferry. Left to right: Leigh Lint, boatman; H.E. Blake, boatman; Frank Word, cook; C.H. Birdseye, expedition leader; R.C. Moore, geologist; R.W. Burchard, topographer; E.C. LaRue, hydraulic engineer; Lewis Freeman, boatman, and Emery Kolb, head boatman.

Image scan of a historical bird migration card.

Rod man Koontz holding a stadia rod.