DMS Harmoniums
- Manufacturers and exporters of harmoniums. List of models with photographs.
- http://www.indianmusicalinstruments.com/harmoniums1.htm

Reed Organ Society
- International organization; list of officers, index of articles and available back issues, selected articles.
- http://www.reedsoc.org/

Keshav-Music Harmoniums
- Offering hand-picked Indian harmoniums and harmoniums with extra notes, multifold bellows, special keys, and fine finish for melodious sound.
- http://www.keshav-music.com/harmoniums.htm

The Reed Organ and Harmonium Workshop
- A division of the Springwood Music Workshops. Restoration and repairs in the United Kingdom.
- http://www.musiclink.co.uk/reedorgans/

The Indian Harmonium
- History, photos and links.
- http://chandrakantha.com/articles/indian_music/harmonium.html

Dwarkin & Son (P) Ltd
- Inventor of the hand harmonium. Manufacturer and exporter of musical instruments from Calcutta, India. List of products and prices.
- http://www.dwarkin.com/

Ali Akbar College Store
- Harmoniums made in India; online ordering.
- http://www.aacm.org/shop/harmonium.html