My Trendata 1000 Selectric terminal went in a garage sale years ago. Here is
a picture of me at the terminal.
http://www.swtpc.com/mholley/MySystem/MySystemPhoto.htm
A local computer store near Seattle sold these for about $900 in 1978.
Several people in the Northwest Computer Society got them. We had low cost
access to time-sharing on a PDP-11/70 at night that supported the terminal.
I still have the documents and software if you want to hook one up to a
SWTPC 6800 computer.
Here is a photo from the IBM 2741 Communication Terminal manual.
http://www.swtpc.com/mholley/MySystem/IBM_2741.jpg
Michael Holley
www.swtpc.com/mholley