[GreenKeys] Model 28 - "A Step Forward in Printing Telegraphy"

[Nick England]

Also thanks to Ralph W8ROI, I have scanned "A Step Forward in Printing
Telegraphy", a 1954 AIEE article on the Model 28 by A.S. Benjamin and W.J.
Zenner
http://www.navy-radio.com/manuals/tty/sales/m28-step-forward.pdf

Nick England K4NYW
www.navy-radio.com
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