Where I got my information...
http://www.rleggat.com/photohistory/
http://www.photo.net/history/timeline
Motion picture: M. Bryant
Websites you might like...
http://www.kodak.com/eknec/PageQuerier.jhtml?pq-path=2/3/38&pq-locale=en_US
http://www.rleggat.com/photohistory/
http://www.photo.net/history/timeline