BGuthrie Photos: Natl Archives -- Linda McCarthy ("From Pigeons to Predators")

Natl Archives -- Linda McCarthy ("From Pigeons to Predators"):

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Description of Pictures: In "From Pigeons to Predators: How Communications Helped Shaped U.S. History and Espionage," espionage historian Linda McCarthy will highlight the evolution of communications technology from the time of carrier pigeons to modern day unmanned drones. McCarthy will explore intriguing and little known elements of this timely topic using rare period photographs from her private holdings.
The speaker was introduced by Susan Clifton, Public Programs Producer, Center for the National Archives Experience, National Archives and Records Administration.

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Copyrights: All pictures were taken by amateur photographer Bruce Guthrie (me!) who retains copyright on them. Free for non-commercial use with attribution. See the [Creative Commons] definition of what this means. "Photos (c) Bruce Guthrie" is fine for attribution. (Commercial use folks including AI scrapers can of course contact me.) Feel free to use in publications and pages with attribution but you don't have permission to sell the photos themselves. A free copy of any printed publication using any photographs is requested. Descriptive text, if any, is from a mixture of sources, quite frequently from signs at the location or from official web sites; copyrights, if any, are retained by their original owners.

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Specific picture descriptions: Photos above with "i" icons next to the bracketed sequence numbers (e.g. "[1] ") are described as follows:
1. NALM_060510_003.JPG: Susan Clifton and Linda McCarthy
2. NALM_060510_019.JPG: Linda McCarthy
3. NALM_060510_098.JPG: Slides were marked "History is a Hoot, Inc, -- All Rights Reserved" so I'm not typing them into the main section. The Father of American SIGINT: Alfred J. Myer's wigwag system, which relied on flags, lanterns, torches and numeric codes, is considered the first "wireless" communications network. Keen Lookouts and Little Flags: "Their signal station... commanded a view of every movement. We could not make a maneuver in front or rear that was not instantly revealed by keen lookouts... It was this information, conveyed by little flags upon the mountain top, that no doubt enabled the enemy to concentrate his force against our weakest points..." -- A Richmond Correspondent Professor Lowe's "Frequent and Accurate Reports": Thaddeus Lowe (1832-1913), American balloonist. Chief Aeronaut of the Balloon Corps (BC) or Aeronaut Department (AD). "I ascended to the height desired and remained there, keeping the wires hot with information" -- Thaddeus Lowe. The Flying Telegraph Train: A temporary measure to facilitate message relay across a limited theater of operations, this electrical SIGINT system emphasized expediency over permanency. The Great War: "In military service, all possible means of communication are used, including the most primitive. However, the best and most rapid are the electrical methods. These include the ordinary wire telegraph, telephone, and wireless or radio apparatus." -- The Principles Underlying Radio Communications, published by the U.S. War Department, 1918 "The ordinary wire telegraph": To help cover a shortage of military telegraphers, hundreds were recruited from private industry, most notably the Bell System and several railroads. "The wireless or radio apparatus": Radio, with its reliance on waves instead of wires, played a limited role in World War I. Most sets were too large and cumbersome for use in trenches. No compact or portable unit materialized before the end of hostilities. "The telephone": Telephones were introduced in large numbers, helping to compensate for the technological shortcomings associated with telegraphy and radio. Can you hear me now?: By the time of the armistice that ended World War I, the Signal Corps had strung nearly 23,000 miles of wire. The practice of wiretapping originated with the flying telegraph lines of the Civil War. 325th Field Signal Battalion: African Americans were recruited for Signal Corps training and duty, ultimately serving with distinction in the 325th Field Signal Battalion. The "Hello Girls": Sworn into the Army, these 200 women were issued uniforms, dog tags, gas masks, and steel helmets. Veteran's status was granted 60 years after the war ended. Plan "B": When electrical communication lines were disrupted by combat or sabotage, the Army resorted to more traditional means. The Wizard War: "This was a secret war, the Wizard War... No such warfare had ever been waged by mortal men." -- British Prime Minister Winston Churchill An American soldier operates a commo station atop the Eiffel Tower. From here, he could communicate with military bases in Great Britain, Washington, DC and Germany. Enigma and house it was "bombed": Estimates have the war in Europe shortened by at least two years because British and American cryptanalysts broke Enigma. The ability to read Enigma messages played a major role in Allied victories. A CIA Enigma: The CIA Museum's three-rotor model is fully functional, thanks to some minor repairs made with materials obtained from a local Radio Shack. By the end of World War II, five-rotor models had been introduced, providing up to 200 quintillion (that's 200 followed by 18 zeros) possible permutations. Bombes Away: Variations of the Bombe were developed to break Enigma's ciphers. [I stopped photographing after I saw the copyright "all rights reserved" notice at the bottom of one of the slides.]
4. NALM_060510_128.JPG: Linda McCarthy and Alli Jessing
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2006 photos: Trips this year: Florida (two separate trips including Lotusphere and taking care of mom), three weeks out west (including Yellowstone), Williamsburg, San Diego (comic book convention), and Georgia. Equipment this year: I was using all six Fuji cameras at various times -- an S602Zoom, two S7000s,a S5200, an S9000, and an S9100. The majority of pictures this year were taken with the S9000. I have to say, the S7000s was the best camera I've used up to this point.. Number of photos taken this year: 183,000.
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