1791 May 31. (Jefferson to Martha Jefferson Randolph). "An abundance of speckled trout, salmon trout, bass and other fish with which [Lake George] is stored, have added to our other amusements the sport of taking them."7
3.MB, 1:423. Transcription available at Founders Online. The falls of the Schuylkill River, five miles above Philadelphia, was a popular site for a day's outing. Jefferson was apparently taking advantage of the excellent fishing opportunities at the falls. The falls were submerged by the building of the Fairmount Dam in 1821. See Edwin Iwanicki, "The Village of Falls of Schuylkill,"Pennsylvania Magazine of History and Biography vol. 91, no. 3 (1967), 326-41.