Hi Spinner,
If you want to begin collecting I would recommend checking out a few clubs here in the states and also getting a copy of Frank Arnalls “The Padlock Collector” which is available through this site. The last edition of this book was back in 1996 but is still very helpfull in identifying and pricing locks. It also has a great layout for the numerous catagories of collecting padlocks and the companies, hardware distributors who made them possible.
You’re not too far from the Lock Museum of America in Terryville, CT which is wealth of information regarding American lock makers. Try googling a couple of clubs here in the states, Both the West Coast Lock Collectors Association (WCLCA) and the Americal Lock Collectors Association (ALCA) have regular newsletters which address the hobby and full of great articles covering a broad spectrum of topics. There are also a couple of clubs and newsletters from the UK and Europe and all have a regular yearly event where everyone’s prize posessions are on display and others for sale.
Good Luck