Maccann Duet Websites

- concertina.com

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--all free.

3,290,738 $ 480.00

- robertgaskins.com

Bob Gaskins invented PowerPoint and headed the Microsoft group that made it a success. PowerPoint history, documents, photos. Contacts in San Francisco and London. Personal research on history of concertinas.

13,177,998 $ 8.95