Studia Instrumentorum Musicae presents some rare resources for those interested in researching historic stringed instruments. I recommend starting with the on-line museum of historic guitars, zithers, and citterns.

The deeper you dig into this site the more treasure you will find.

Bayern, um 1800

Bayern, um 1840

Hummel Instruction Book

Sign.: "J. Wallis / LONDON" (Händlerzettel, gedruckt)

Sign.: "Repariert / Hans Müller Leipzig / 1959" (Bleistift, auf Furnierstreifen Decke innen)

Richard Jacob "Weißgerber" Markneukirchen 1920