Padlocks
Opening Combination Padlocks
Black, Carl.
Improvised Lock Picking
Steven Hampton
The padlock collector
Franklin M. Arnall
Specifications for padlocks
Amended specifications for padlocks
Antique padlocks
Jack Roberts
More Working Wooden Locks
Tim Detweiler
What's behind the Padlock Law?
Evariste Dubé
The Padlock Reference Book for Pin Tumbler Push Key Locks
Neil Pylant
The big book of wooden locks
Tim Detweiler
Zamki i klucze kultury przeworskiej
Czarnecka, Katarzyna (Archeologist)
Padlocks
Safe Padlock & Hardware Co
"Yale products"
Yale & Towne Manufacturing Company