Hey John,
For a bar top I would just get something like Eric posted printed on car wrap. Put it between two pieces of glass, depending on the wrap could light from below. Best if bar tops are smooth easily cleaned surfaces :-).
Creighton
The plan is to lay it all out, fasten it to a sub-board and after putting on drink rail and bar rail I'd use the pour on epoxy to give it that smooth bar top finish.. sealing all the vintage panels underneath...