The MacCann Duet Concertina
- Authoritative source for the instrument patented in 1884 by John Hill MacCann. Offers complete scanned instructional booklet published by the inventor in 1902.
- http://www.maccann-duet.com/

Wheatstone Concertina Ledgers
- Colour scans of C. Wheatstone & Co. production and sales ledgers, from the concertina document archives of the Horniman Museum in London.
- http://www.horniman.info/

Polish Fireball's Chemnitzer Concertina Music Site
- The Web resource for free sheet music with special notation for the Chemnitzer Concertina.
- http://www.yagelski.com/sbox/

Don Nichols' Concertina Page
- Internal details about the concertina, information about specific concertina types, and information about stolen concertinas.
- http://www.d-and-d.com/dnichols/DoN.html

Difficult Chords for Concertina Players
- A guide to various chords, listed by type.
- http://home.clara.net/gmatkin/chords.htm

Concertina.net
- A complete resource for the anglo concertina enthusiast .
- http://www.concertina.net/

Concertina Library
- Documents for the study of English, Anglo, and Duet concertinas: history, instruction books, sheet music, patents, technical papers, rare periodicals, and new research by many leading scholars. Full texts to read, download, and print.
- http://www.concertina.com

Concertina FAQ
- Covers history, types, makes, repair and dealers.
- http://www.concertina.info/

Chemnitzer Concertina
- Photos and links collected by concertina maker Christy Hengel of Minnesota and his friend Loren Schaeffler.
- http://www.newulmtel.net/~lorens/