I'm just getting back into this at the age of 42 and don't remember the actual names of the sets, but I had a ton of the Classic Space from the late 70's-early 80's. I remember I had some big yellow castle. I had a lot of sets that came with those little red framed windows. There was never a shortage of those. I really wish I could remember the exact sets I had. I will say that I wish Lego was still packaged in boxes with the flip top lids. It was so cool to be able to open that flap and be able to see all of the pieces in those plastic trays.