That's lumber country. Check around at the lumber yards and mills. Someone will known where to get spray on wax emulsion for endcoating fresh cut lumber. That's Anchorseal. Can also look in the yellow pages or google for wax suppliers near you. They'll have it also and usually sell by the pound.
Worse comes to worst, find your nearest turner's club and suggest they buy in bulk (55gal drum is pretty cheap). 'S what we do.
Good luck,
Dietrich