Here's an interesting invoice--which, if I understand it, documents some 300 stand of arms that were sent by the County Lieutenant of Philadelphia (Colonel William Henry [not the former Lancaster gunsmith William Henry]) to Allentown for repair.
At the same time, the County Lieutenant sent the invoice for this work to Pennsylvania's government (Council) in Lancaster to get paid.
Eric, I think this document suggests that that clerk, John Jacobson, must have been assigned to the Allentown factory itself, since he produces this document in Allentown. Or at least he accompanied the wagons full of arms up there.