I am looking for recipes which utilize propolis in a finish for stringed instruments.  More specifically I'd like to find some historically accurate use of propolis in the finishing of early instruments...viola de gambas particularly.  As I understand it, the propolis is incorporated in some solvent which will evaporate leaving the wood impregnated with propolis.  A search of the archives only came up with some experimentation using propolis on Harp string bridges.  If anyone knows of a source...perhaps an antique book, please contact me directly at [log in to unmask]  Thanks, Betsy Bashaw