As far as lugs and dropout's go I'd thoroughly recomend this chaps web site
; http://www.flying-scot.co.uk/frame_details.html where lugs, dropout's
etc. can be seen in there native environment - In fact how about a
discussion about Nervex Pro lugs ? Catalogued in 1959 (courtesy Chuck
Schmidt) as using "unique" ports and cut-out's, yet mysteriously appearing
in at least one other 'stock' variation...
Okay it's limited in choice, but I'm sure this guy would be happy to front
any other lug variants anyone can throw at him on a seperate "lugs" page.
Any donations of manufacturers lug catalogs for wider 'net' distributon
would I'm sure, be most welcome.