Bogen Photo
Canon USA
Hasselblad
Leica
Linhof
Mamiya
Norman
Photoflex
Photogenic
Rollei fototechnic
Schneider
Speedotron
 
Digital Camera Review
 
Lomographic Society
Photographie magazine
Subclub.org
 
http://www.cosmonet.org/camera/index_e.html
http://www.photohist-ensign.demon.co.uk/
http://www.marcoant.com/Rectaflex/HP.htm
http://www.cameraguild.co.jp/