This is from the list of items in the Albert Stern section in the Liddell Hart Centre for Military Archives at King's College, London:
STERN: 4/7 1918
Four technical photographs produced by US Army Signal Corps of a small tracked vehicle. 4 photographs
Any ideas?
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"Sometimes things that are not true are included in Wikipedia. While at first glance that may appear like a very great problem for Wikipedia, in reality is it not. In fact, it's a good thing." - Wikipedia.
Army Signal Corps... You know, John Carden, of Carden-Loyd fame, was in the Army Signal Corps, and almost immediately after returning home from duty he quit his Cycle-Car business and designed a small prone-driven unarmored tracked vehicle, the precursor to what would become the Carden-Loyd one-man and two-man vehicles.
I know these technical photographs are probably not related at all - but it's a tantalizing possibility.
As far as I recall, it isn't anything as interesting as that. I've been through all the photographs in the Stern Papers (during my researches into the Macfie machine and the Flying Elephant), and whilst there are many interesting, indeed fascinating, photographs, there is nothing groundbreaking that hasn't otherwise appeared in print elsewhere at some point in time.
Still, I'll check next week when I'm back at work and report back.