Miscellaneous notes from Charles H. Kaman - Internal R&D General Notes and Meeting Minutes 1976-1977

This is a collection of internal Ovation research and development notes, meeting minutes, and technical memos from 1976-1977, documenting acoustic and structural experiments on guitar tops, rims, bracing, and stiffness parameters. The documents cover analysis of sound quality factors including fundamental frequency (K), lateral stiffness, top weight, and outer ring transmissibility across various prototype guitar models. Notes also include records of a special 45-degree top guitar built for a patent dispute rebuttal (Haines Rebuttal) and conference minutes outlining future testing objectives.