Hmm, good question. Based on where my family typically went skiing at the time, I think it was probably the main double at Crotched… old Crotched, that is. Might still be standing, sure isn’t running. I started skiing at Nashoba, I’m pretty sure, but I know I didn’t ride a chairlift because their main hill is actually fairly steep.
First one I have a clear memory of riding is the Village Lift at Smuggs (Madonna at the time), which is, of course, still there.