Classical Guitar Study - Pattern Bracing Design Sketch (June 8, 1978)

This is an internal design/engineering sketch dated June 8, 1978, showing a classic bracing pattern for Ovation guitar models #10 and #11. The hand-drawn document details specifications including a 3-inch hole, 5/8 measurement, glass brace, treble side orientation, deep bowl Ovation material, airplane neck block, Classic Bruno bridge, and no outer ring. It appears to be a single-page internal working document rather than a consumer-facing catalog or brochure.