My apologies if this duplicates another post; I'm on digest, so I may be chiming in late...
TA makes a 33 tooth chainring in 110BCD, somewhat rare, and new production so not OT and not period correct, but it's out there if you want the absolute smallest ring on your 110BCD crank. Try Peter White Cycles, maybe - http://www.peterwhitecycles.com
Good luck,
Derek Vandeberg
Bigfork, Montana