An elevator direction indicator made from Lucite acrylic resin. Signals from this fixture were found to be considerably brighter than those of any material previously used.
Table of Contents: A step in the right direction; A mover and shaker in salt mines; Rescuing an architectural wonder; First line of defense against oil spills; The conservation of fine paintings; With many tanks from CBI; As good as the original;...
Schoolboys of San Francisco lined up for inspection in front of their tents at the training camp at Manzanita, CA. This camp was formed exclusively for the school children of San Francisco and the bay cities. The purpose of this camp is to teach...
At the lumber yard of Church E. Gates Company, 152 Street and East River, NY, there is a system of roller and belt conveyors which take planks to all parts of the place. Here, the lumber comes from ships via a line of rollers. It is shoved off the...
County committee of the AAA, representing the War Food Administration, have arranged for around 20 auctions this fall to help the Defense Plant Corporation move to farmers used tools, equipment and supplies that could not be moved successfully...
The rear gunner of the Martin bombers are also protected by Plexiglas enclosures which can be revolved mechanically to train multiple machine guns at planes attacking from the rear. Resembling the dome of an astronomical observatory the enclosure...
Miss K. Grace Fahey, receptionist, under direction of Dr. Edward O. Hermann, research chemist, pours methylene blue dye over paper treated with Quilon stearato chromic chloride to demonstrate water repellency of the compound, developed by the...
This stream, near Oxford, Iowa was filled with silt, surface vegetation and roots forcing it to meander through the district. Because of sluggish drainage, heavy rain would raise the stream over an adjoining road. Under the direction of DuPont...
West Coast representatives of DuPont finishes, in San Francisco for a three day dales convention, visit the Golden Gate Exposition. The group is pictured in the DuPont Company exhibit building. Walter J. Sohlinger, West Coast manger for finishes,...
Photograph of plaque honoring the late Dr. Wallace Hume Carothers, unveiled at the dedication of The Carothers Research Laboratory on September 17, 1946. The laboratory is situated at the DuPont Experimental Station, near Wilmington, Delaware,...
From cover: "Partial result of survey made by the world league against alcoholism. The following tables are taken from a very comprehensive report of investigations made under the direction of Robert E. Corradini, research secretary for the World...
Caption: "Reminiscent of the Trench Helmet used by American Troops in the World War, is this Safety Hat worn by the Superintendent of Alaska Colliery. He sets the example for the 1,000 miners who work under his direction, by wearing the safety...
Colored print. Landscape with balloon depicting first aerial voyage in presence of the Dauphin, under the direction of Montgolfier, on 21 November 1783
Test from back of image: "The above photo shows - Lt. Cmdr., Richard E. Byrd, U.S.A. retired who is to lead an independent expedition to the Polar regions this year. On this trip which is being financed by John D. Rockefeller Jr., Vincent Astor and...
Text from back of image: "Led by the city of Detroit, six balloons tonight were floating northeast over Lake Erie after being cheered by 200,000 as they took off from Cleveland Airport late today in the nineteenth Gordon Bennett International...
