I was just emerging from the High School and early-post-High-School "distractions" at that time and managed to get a couple too. At the time, I didn't know the difference between a GP9 and a U33C, so I didn't know what I had (and how relatively rare those critters were to Roseville). I know that GP35s held on on the SP for awhile because I managed to catch one in Kodachrome paint later on, but how soon did the SP GP30s disappear altogether??? I'll assume that they probably all went to the far-south part of the system.