In 1683, William Penn visited the area to meet the Indians and to formally purchase the land from them. He describes their appearance in relation to other cultures and ethnicities.

The only remembrance of the Lenape in the Wissahickon is a statue of a crouching Native American on what is now called "Indian Rock." The statue was erected in 1902 by Mr. and Mrs. W. Henry. Before it was a wooden version that now sits in the Museum of the Germantown Site and Relic Society. The statue is often thought to be Tedyuscung - the last of the Lenape Chiefs. A more appropriate description was given long ago when some one described him as "no true savage - he was litigious, was frequently drunk, and showed other evidences of a tendency to lapse into civilization." There is also speculation that the rock the statue is on was actually the site of the last council of the Delaware Indians in 1764 before their removal to the Wyoming Valley.