The Ghost town is Gallows Harbor, PA. It is on the west branch of the Susquehanna River. There are 6 large chests and 6 smaller chests plus a glass skull filled with coins, gems, etc. There is a novel on Kick start that has all the clues needed to find the caches. A good metal detector would also help.
I have seen the preview pictures of the 6 chests, but the picture option no longer exist in this forum. One looks like the Arc of the covenant That Indiana Jones was after.