Holleriths were also used to coordinate elements of the Holocaust[1].<p>[1] - <a href="https://en.wikipedia.org/wiki/IBM_and_the_Holocaust" rel="nofollow">https://en.wikipedia.org/wiki/IBM_and_the_Holocaust</a>
There's a beautiful exhibit of one of these in the Computer History Museum. Just saw it last weekend.<p><a href="http://www.computerhistory.org/revolution/punched-cards/2/2" rel="nofollow">http://www.computerhistory.org/revolution/punched-cards/2/2</a>
The Holleriths (later IBM Tabulators) were also used extensively in Bletchley Park and the Heliopolis station as part of the technique for cracking Italian Air codes - explaining why there's one or two knocking about in the National Museum of Computing in Bletchley.
There's a great segment in the documentary series <i>Connections</i> that discusses the Hollerith Machine: <a href="https://youtu.be/_mT_futz23s?t=2m37s" rel="nofollow">https://youtu.be/_mT_futz23s?t=2m37s</a>