[GreenKeys] Early early Model 28 catalog - many prototypes

[Nick England]

For your edification and reading enjoyment -
I have acquired and scanned an interesting document showing many prototypes
and artist's conceptions of proposed Model 28 equipment. Many of these were
probably never produced. The early 28 reperf with add-on typing section is
certainly interesting. Not to mention the IMMERSIBLE set on page 27-29
Oh yeah, the link
http://www.navy-radio.com/manuals/tty/28-proto.pdf

And don't forget to check out the 28ASR prototype photos
http://www.navy-radio.com/tty/28asr-proto.htm

Enjoy!
Nick England K4NYW
www.navy-radio.com
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