en|DRYAD sample cipher sheet. Cropped from Figure 20 in the on-line course "IS1100 Signal Operation Instructions (SOI) Edition A" issued by the U.S. Army Institute for Professional Development (AIPD), U.S. Army Training Support Center, Newport News, Virginia 23628-0001
Vectorized version of KTV1400D.jpg, originally downloaded from https://hosta.atsc.eustis.army.mil/ cgi-bin/atdl.dll/accp/is1100/is1100_top.htm (this link no longer works).

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