The National Catapultry Association (NCA), formed in the early 1970's by Rodney Wolf and Kent Shepard, was the de facto governing body for slingshot tournament shooting in the USA.  During its heyday, the NCA garnered support from a wide body of slingshot enthusiasts and developed some truly innovative ideas for promoting the sport of modern hand catapultry.  We have obtained a fairly comprehensive collection of the quarterly journals produced by the NCA.  If you have access to journals not in our collection, we would ask you to contact us so that we may add them to the collection.