Flying Models has been through several hurricanes, floods and fires over the years, and they have lost most of their archives. I can't remember for sure but I think their listing stop somewhere in the late 60's. I have a complete collection of Flying Models magazine, including the mystery May,'54 issue, and I filled in some of the missing construction atricles they need for some of the plans that they hav. I think the three Parrot designs were in Amercan Aircraft Modeler. At least the Ryan was for sure. Those were the Hobby Helpers plan service I believe. There was at one time a gentleman that had all the Hobby Helper originals and copies, but He passed away, and I don't know what happened to them after that.
So many planes, and so little time!
Type at you later,
Dan McEntee