Independent musicologist. Past-President of American Musical Instrument Society (AMIS); associate editor of AMIS Journal. Senior Editor (articles on musical instruments and their makers) for Grove Dictionary of American Music (2013) and Grove Dictionary of Musical Instruments (2014). Also active in Society for American Music (SAM) serving on committees and (formerly) as archivist. Exhibits researcher for Smithsonian Institution. Also 25 years as computer scientist for U.S. Naval Research Laboratory, Washington DC.