Older AI flight plans

Is there anyplace that that may have AI plans for the 1970's or early 80's. Lots of airlines then stateside, lot more variety of aircraft. I'm trying to populate some of the smaller airports with CV580, ATR and Barry Blaisdells AI 1900s. The Gmax CV580 works very well so far. The ATR is a gmax also, but only in Air france colors. Still haven't figured out painting that well. It is called lack of talent.