John Withers has re-prints that cover the B29. The following might be of interest:
Care & Maintenance 350 all models 1926-30, 32 page Illustrated $18
VIN211Spare Parts List A28, B28, C28, B29 & L29 1928-29 36 pages $18
VIN212His advert and contact details are
here.I do have some pictures of a very original L3, quite similar, but I would have to dig them out and scan them in (pre-digital.)
-Doug