Most of the photos on this site were extracted from reference images (high-resolution tiffs, 20 to 200 megabytes in size) from the Library of Congress research archive. (To query the database click here.) Many were digitized by LOC contractors using a Sinar studio back. They are adjusted by your webmaster for contrast and color in Photoshop before being downsized and turned into the jpegs you see here.
Vintage photos of:
November 1942. Hanna furnaces of the Great Lakes Steel Corporation, Detroit. General view showing tank which stores gas from the coke oven. Square building and extension in middle ground is where coal is fed to a feeder belt and then transferred to a storage place on top of the coke oven. The coal is then dropped into three inverted bottle-like containers and from there fed directly into the coke ovens. View full size. 4x5 Kodachrome transparency by Arthur Siegel.
This network of black magnetic beads, smaller than a postage stamp, is one of a number of input-output "memory" units in the new "704" electronic calculator built by International Business Machines. This particular "memory" unit of the 704 instantaneously strips all information off a slow-moving punch card, stores the data momentarily in the form of magnetic charges, and passes along the individual items, one at a time, to a lightning-fast calculating section, which can handle around 10 million operations an hour, theoretically replacing 3,000 hand-operated adding machines. Orders are in for over thirty 704's, which I.B.M. will rent at some $20,000 a month each. View full size. Photo by Ezra Stoller.