Pretty sure my first was the Alpha III because it came with the launch supply box, this was about late 70's, maybe 1979. I still have the whole shebang, including the range box, Porta pad, solar launch controller, original manuals (handbook of rocketry and others), and of course the rocket, which you can tell has seen better days. But it still serves me well at every launch as a wind tester, because at this point it's so beat up, I don't care if I lose it. Some other early rockets I built around that time were the Estes Icarus (lost in a forest about 10 yrs ago), Estes Javelin & super flea combo (still have the Javelin, super flea lost to a tree last yr) and the Blue Bird Zero (Core sampled last year, status unknown as I gave it to a fellow club member who wanted to try and fix it up and haven't seen it since).
Glenn