NOTE: I edit this and add sites from time to time. Also note I am not associated with any of these in any way. Also, just because its listed, Its not a referral, some I’ve used, some I have not. Use it as if you found it on your own.
The mother of all Stanley information http://www.supertool.com/StanleyBG/stan0a.html
http://www.cs.cmu.edu/~alf/en/antique-tool-faq.txt Antique Tools FAQ (as of 11/97)
Millers Falls here—http://oldtoolheaven.com/bench/bench.htm
Learn to use the plane at his blog—- http://www.logancabinetshoppe.com
The Hardware Companies Kollectors Klub – http://www.thckk.org/history.htm
Find the plane manufacturer by lever adjustmenthttp://www.brasscityrecords.com/toolworks/graphics/plane%20id.html
Other Reference Sites
Timetestedtools dating the Sargent 400 series bench plane
Rexmills type Study
antique-used-tools.com frog comparison
Plane dating flow chart
Wooden Hand plane History
Tap and die
St. James Bay Tool Company 12-20 Tap and Die Set.
eBay Seller Nicobie sells 12-20 Taps and Dies.
1/4-20 BSW – located on eBay from a UK merchant.
Victor Machinery Exchange 12-20 Tap
Victor Machinery Exchange 12-20 Die