Thanks for this bit of nostalgia. As a veteran user of DEC computers for most of my career, I really enjoyed this despite some of the omissions that others have pointed out. I could also add some additional thoughts to what else has also been mentioned, including LSI-11 which was a micro version of the PDP-ll. I really liked the orthogonal instruction set. My experience goes back to PDP-8 which were all over the place at Lawrence Livermore National Labs; they were using them basically as terminals for accessing the big CDC-7600/CDC-6600 supercomputer complex there. Some side points on operating systems such as RT-11 and peripherals such as RL01/RL02 might also have been interesting. But this was still a lovely bit of memorabilia, so thanks again! ;-)
Oh, I almost forgot about the user group DECUS, a treasure trove of all kinds of goodies, including DECUS-C compiler which we used extensively. And of course MACRO-11 was our main workhorse for assembly language programming on the PDP-11 and LSI-11 for many years.