Concertina library: Digital reference collection for concertinas is an online collection of English, Anglo, and duet concertina resources, with entries ranging from research-based articles to instruction manuals, sheet music, and organological studies. Created by the computer scientist and concertina player Robert Gaskins, the library aims to compile and index all of the writings by leading authors on concertina matters, making them available to the public for free.
Above: Marie Lachenal with her concertina, ca. 1885.