C. Malcolm Watkins, The Cultural History of Marlborough…
“ In 1731, Mercer built two warehouses which probably stood near the waterside at Potomac Creek where his sloop and schooner and visiting vessels found sheltered anchorage. These burned in 1746, but must subsequently have been rebuilt, since Thomas Oliver in his 1771 report to James Mercer commented that [Pg 178] the “tobacco houses” must be repaired as soon as possible. They were probably among the buildings that Mercer had constructed up to 1747, when he reported that he had “saved” 17 of the town’s lots by building on them. These lots comprised 81⁄2 acres in the southwest portion of the town. ”
