WECo Magazine 1982 Q3 p. 8 displays a technician loading a disk pack with the 3B20S bezel in the foreground:

https://archive.org/details/westernelectricmagazine_1982_q3/page/8/mode/2up

WECo Magazine 1982 Q3 pp. 24-25 display some promotional meeting photos concerning the 3B20S:

https://archive.org/details/westernelectricmagazine_1982_q3/page/24/mode/2up

WECo Magazine 1982 Q4 p. 4 has a picture of a WECo magtape reader, presumably on a 3B20:

https://archive.org/details/westernelectricmagazine_1982_q4/page/n3/mode/2up

WECo Magazine 1982 Q4 p. 5 has a picture of a 3B20S and one disk drive:

https://archive.org/details/westernelectricmagazine_1982_q4/page/4/mode/2up

WECo Magazine 1983 Q2 p. 28 Figures 1 and 2 display a 5ESS and 3B20S respectively:

https://archive.org/details/westernelectricmagazine_1983_q2/page/28/mode/2up

WECo Magazine 1983 Q3 pp. 4-5 displays a 5ESS with a few panels open at a low angle:

https://archive.org/details/westernelectricmagazine_1983_q3/page/4/mode/2up

WECo Magazine 1983 Q3 p. 13 displays a technician swapping out a card as well as a disk pack on a 5ESS:

https://archive.org/details/westernelectricmagazine_1983_q3/page/12/mode/2up

WECo Magazine 1983 Q3 pp. 22-23 display some folks working on DMERT/3B20D stuff at some VT100s:

https://archive.org/details/westernelectricmagazine_1983_q3/page/22/mode/2up

And from a Facebook group I came across in a Google image search:

2 3B20S units in a computing center:

https://scontent-sea1-1.xx.fbcdn.net/v/t39.30808-6/277168646_10159734053426181_2069604984016493553_n.jpg?_nc_cat=106&ccb=1-7&_nc_sid=4c1e7d&_nc_ohc=yYIzFJOyCUQAX-zSDKM&_nc_ht=scontent-sea1-1.xx&oh=00_AfBw5TQoptTA-ff8lVAfJZfiiQOK0wQxsZweICFp5ubGgg&oe=6518D7FB

A 5ESS showing the 3B20D end of it:

https://scontent-sea1-1.xx.fbcdn.net/v/t39.30808-6/270140634_10158822329508732_4453055431787715335_n.jpg?_nc_cat=101&ccb=1-7&_nc_sid=f7d594&_nc_ohc=wAmsOatL1WEAX_RrD-_&_nc_ht=scontent-sea1-1.xx&oh=00_AfCd_KrTRruM40izXWNTSvgrMpfXPqgWxKubkOdddqyl3A&oe=6518F428

I can't overcome my anti-Facebook-ness to try and get in touch with that group...but it seems like some folks there might appreciate COFF and TUHS if they don't know about them. If you're a member of the Zuckerbook and are so willing, you might consider reaching out to some of those folks with links to the mailing lists. I don't know how etiquette on those sites work tho, so ymmv.

That should be all the 3B20 content I've come across the past few months. I've been trying to drum up more photographic evidence as there isn't much. The same can be said for other non-3B2 machines in the 3B line, I only know of a few pictures of a 3B15 and I think one I've ever seen of a 3B5, I wouldn't know another picture of a 3B5 if I did see one. Not a whole lot of computing hardware with that little Bell logo on it, it's nice to see when stuff does turn up.

- Matt G.