Outerzone.co.uk has a good number of Keith Laumer plane plans. They have also digitized and made available his book, cover shown by Bipe Flyer,
How to Design and Build Flying Models 4th on the list at
Outerzone Book List . Rather than point directly to his book, some may find the list of other books interesting. Although it shows a copyright of 1975, probably one of the last versions, I remember reading this book at the Keesler AFB library in the mid 1960's as an adolescent. Keith's book must have been very popular, because through the years I have checked it out from various public libraries in different states.
One of his interesting chapters was on rebuilding a wreck, where he illustrates various techniques. Today, not many bother with repairing heavier damaged ARF's. I even unsubscribed from one thread, because of the negative attitude toward my suggestion that the medium sized trainer was restorable. It wasn't that badly broken up. "No one has time and the kit is cheap ($75 US plus shipping)" is a weak excuse. If one knows how to manage their personal time, they could simply keep the damaged plane on the back burner, work on it here and there, little by little. It is how I did it when working full time, and at a fraction of the cost of a new ARF.
Anyway, Keith's designs have that certain charm about them. Upsizing his free flight models slightly or leave as-is at 1/4-A engine scale would make ideal half-A candidates.