Thence he was ordered to Oswego, New York, to build the brig Oneida for Lake Ontario service, and which the spring of 1809 saw launched.
While the war flurries which called for the building of the vessel were tethered, Cooper had learned his lesson in ship-building, ship-yard duties, and water-border life; and these served him more than thirty years later in his matchless Indian story, "The Pathfinder." Miss Susan Cooper has left some interesting pages of this period of her father's naval service; in part they read: "In 1808 several young officers under Lieutenant Woolsey were ordered to the shores of Lake Ontario for building a small vessel of war. Among them was Mr. Cooper, then a midshipman in the service. Their road lay for many a mile through the forest to the mouth of the Oswego River,—their destination,—where the Oneida, a brig mounting sixteen guns, was
built and launched. They enjoyed the wild coloring of frontier life They roamed the forests and explored the shores in leisure hours.
Cruises among the Thousand Islands were frequent; many were the fine fish caught and good chowders eaten. The picturesque beauties of the region, the countless islands, were greatly enjoyed and never forgotten by the young midshipman."
The youthful officers were ordered to Buffalo, and stopping for the night at a rude frontier inn, it was Cooper's duty to inquire what they might have for supper. "Mine host shook his head ruefully; he could promise very little. 'Give us what you eat yourself; you must
have food of some kind,' said Cooper. Mine host looked melancholy; on his honor he assured the young officers he had absolutely nothing to set before them but game, steak, and brook-trout; and, maybe his wife could find cranberries for a tart! A month earlier they should have had a dish of fried pork fit for the President, with a pumpkin pie after it. 'Game's plenty, but nothin' else!' added the publican with a sigh. Mine host was pining for pork!