Is there anyplace that keeps a library of plans for kits?

I have a few Pilot 152 kits that are "semi built" up but one is missing a few parts that i need to re-create,,like the windows,and a wing

I also need to re-do the wings on one as I built these years ago as a way beginner and it has a bit of wing twist.

I have one complete 152,,and two fuselages that seem they`d be flyable,,but I need to re do a few things and would hate to have to scrap all three planes.

Do these kits ever show up anywhere or are they a lost art?
I missed out on getting a Pilot Tomohawk back in the day and now regret it.

thanks for listening
Phil/Rt4957