OK, so it's not really Sunday, but I wanted to post a quick update. I had a great weekend in Portland, including visiting the VintageTEK Museum.
I also did a little bit of surplus shopping. I stopped at Stuff in Happy Valley ("Nothing you need. Everything you want.") where I bought a Boss DR-110 analog drum machine (don't ask). I then drove over to R5-D3 Electronic Surplus in Milwaukie, where I bought a manual for my Tek 585 and a couple of issues of Popular Electronics from the 1970s (which included an article about an electronic drum circuit, again, please don't ask).
I also hit Surplus Gizmos in Hillsboro, where I bought some random cables, a rebranded Tektronix video processing box, and some quad-ganged 50k potentiometers. (They were $0.10 each! How could I resist?)
More pictures and words about the museum this weekend.