Statistics for occurrence #1 of “Captain John Mackay” in chapter 4 of Medford Historical Society Papers, Volume 16.:

... writing a duplicate. Boston 22d Decr 1798 Dear Sir— Inclosed you have bill of Lading & Invoice for Ten Hogsheads of patent spirits which is shipped on board the Ship Galen, Captain John Mackay to your address—This small consignment is intended as an experiment—the article will suit your market, should it succeed, the business may be extended so as to render it an object worthy...
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