Nice collections!
I started collecting in the early '70's and have a nice collection of Phoenix and L.A. stuff from back then. I also have a number of rollsigns from L.A. buses of that era plus a few things from L.A.'s earlier streetcar and interurban era. In the last few years, I've been adding New York memorabilia to my collection, thanks to some kind people at Strappies and Transitstuff.