Bob Dix                           American Lock Collectors Association
Don Jackson                   West Coast Lock Collectors Association
Richard Phillips              Locks & Keys (British)

American Lock Collectors Association
http://www.alca.us/

Antique Padlock Forum 
http://www.antique-locks.com/

Antique Padlocks
http://www.antique-padlocks.com/

Billy Edwards 
http://thelockman.com/

Dean Cross      
http://home.southwind.net/~drcwks/index.html

Donald Jackson's Roman Gallery
http://romanlocks.com/

The Jehning Family Lock Museum       
http://www.jehninglockmuseum.org/

Jerry Clausen        
http://members.aol.com/pdx2001/padlocks/index.htm

Joe Kingsmill 
http://members.aol.com/jolock99/locks.html

Lock Museum of America
http://www.lockmuseum.com/

Railroadiana
http://www.railroadiana.org/  

Schofield's Padlock Auctions
http://www.schofieldauction.com/