Helpful links:
http://www.reedsoc.org
http://www.rodneyjantzi.com
http://schaffpiano.com
http://esteyorganmuseum.org
http://www.johnsonrestoration.com
http://www.arndtorgansupply.com
http://www.pumporganrestorations.com
http://www.rechelpiano.com
http://www.stevespianoservice.com
http://www.harmoniumnet.nl
http://www.reedorgans.co.uk
http://www.breffniireland.com
http://directionforourtimes.com
http://tardis.dl.ac.uk/FreeReed/organ_book/
https://sites.google.com/site/harmoniumrestaurateur/home
http://www.pipeorgansirl.com/