Writings - Calculating the Spectrum of a Struck Piano String: Introduction and Three Short Essays. 1) Some Properties of the Vibrational Modes of a One-Dimensional Lumped/Continuous Chain; 2) Normal Modes of a Piano String with Large Hammer Mass Attached; and 3) Vibrational Shape of a Struck String. 1983 unpublished, (typescript, 10 pp. and handwritten notes, calculations, graphs, and diagrams)