Yes. Trip Records was a strange and mysterious reissue label, ugly grotesque album covers, horrible vinyl and should quality, but some really interesting music by some of my favorite artists that I otherwise had never seen or heard of before.
I totally agree with your analysis of Shepp during this period, and with your esteem for Beaver Harris. I saw that group live at the Foxhole on Penn's campus, and they blew me away, especially Harris. I also saw him a couple years later with George Adams/Hannibal Peterson at the Ethical Center, same reaction. This, to me, was Shepp's prime period, good as his earlier work was.