Index of Aerial Photographs from Western Army Map Service Project No. 109 Area G

This index sheet of aerial photography frame from the Western Army Map Service Project No. 109 Area G.

This is an extremely rare opportunity to own a piece of history in the form of a beautiful and interesting vintage photograph that correlates to the Army Map Service, Corp of Engineering, topographical maps. This photograph would make a wonderful gift for the Historian, Photographer, Environmentalist, or vintage ephemera collector to display as intriguing, beautiful, and unique home decor.

Physical Format
Black and White Physical Aerial Photograph

Dimension: 24" x 20"
Condition: Fair vintage condition commensurate with age, sold "As Is"
Maps and photographs are rolled up and shipped in sturdy mailing tubes.

Contractor: Mark Hurd Aerial Surveys Inc.
Contract No. DA 49-018-eng-644
Camera Nos T-5, 41-4139, 8 T-5, 41-4097
Lens Nos. UF 9521 8 UF 9559
Cal Focal Lengths 153.6mm 8 154.52mm
Approximate Scale 1/60,000
Approximate Index Scale 1/300,000
Sheet no. 2 of 4

About the Photography

Most of the frames were acquired in stereoscopic mode, meaning successive frames overlap and create stereo pairs that provide a three-dimensional (3D) image when viewed with a stereoscope. A small percentage of the frames are low-sun-angle photographs acquired during the morning or afternoon when shadows highlight certain topographic features, such as fault scarps, or oblique photographs taken at a non-vertical angle to the ground, like a panorama.

Various federal government agencies originally acquired most of these frames for agricultural and/or forest management purposes. This photography is now integral to many geologic projects, such as geologic mapping and geologic-hazard investigations, along with land-use planning and management and other uses.

About the Photographer

Mark Hurd, friend of Amelia Earhart, was born in 1892 in Minnesota, and lived a storied life. He became interested in aerial photography in the 1920's, during WW1, where he served as a fighter pilot in the fledgling air arm of the U.S. Army, serving in France, as part of the famed Lafayette Escadrille. Upon his return from WWI, he purchased a Sopwith Camel airplane and began his career in commercial aviation activities.

"Photogrammetric Pioneers Mark Hurd Aerial Surveys, Inc."

MARK HURD AERIAL SURVEYS, INC., which grew to a 25-plotter, 125-person operation in the 1960's, began in a small Minneapolis shop fifty years ago. Mark M. Hurd, a World War I fighter pilot,
during the 1930's designed and produced a simple, rugged aerial camera which became widely known for its reliability and ease of maintenance. In this camera, the film was held flat by air pressure rather than by vacuum; air was scooped up by the motion of the plane and led through a tube into the camera chamber, eliminating any chance of vacuum failure, a common plague in those days.

Mark Hurd served in the Army Air Corps again in World War 11 before returning to Minneapolis, where he invited Raymond H. Miller and Allan C. Bock, a pilot-photographer team, to join him in
forming Mark Hurd Mapping Company. A rousing success "from day one," the company rapidly expanded to a six-crew operation that successfully photographed huge blocks of the United States for the Army Map Service, Michael Baker, Jr., Inc., Alster & Associates, and others. Using simple navigational devices and automatic camera mounts developed by Miller, Hurd crews
flew unpressurized P-38 Lightnings (a World War 1 reconnaissance plane), using heated flying suits and oxygen masks at altitudes to 36,000 feet.

In 1954, the company expanded into topographic mapping under the direction of Joseph P. Burns, a civil engineer and photogrammetrist, previously employed by the Geological Survey. The topographic operation successfully completed highway PHOTOCRAMMETRIC ENGINEERING AND REMOTE SENSING, Vol. 50, No. 9, September 1984, pp. 1291. maps in Ethiopia, Tanzania, Bolivia, Chile, and other Latin American countries, as sub-contractors to several large engineering firms. In 1960, Hurd surveyors pushed a 70-mile line through heavy woods in mapping and staking the SunshineSummit sector of the Anchorage-Fairbanks highway in Alaska.

In 1968, Ray Miller, pilot, mechanical engineer, and regarded by many as a mechanical genius, conceived the idea of building an aerial camera in the access door of the Lear jet, a small, fast-climbing business jet that could attain 44,000 feet in twenty minutes and proceed along flight lines at 550 miles per hour. This brilliant concept led the company into another prosperous era; for the past ten years it has photographed large parts of the United States and foreign areas at high altitude.

from PHOTOCRAMMETRIC ENGINEERING AND REMOTE SENSING, Vol. 50, No. 9, September 1984, pp. 1291.
0099-1112/84/5009-1291$02.25/0O 1984 American Society of Photogrammetry