I am a Life Member of the L. C. Smith Collectors Association. One of our members has a link that may help out. One caution is the differance between acid flux and rosin flux and when to use each. Acid flux to tin the parts then wash with hot water and use rosin flux to attach the ribs to the barrels. Acid flux is corrosive.

http://www.picturetrail.com/sfx/album/view/18691676

Will F.