Dr. George Smith. A doctor, judge, scientist, and State Senator, Smith came to Collenbrook in 1829 upon his marriage to Mary Lewis, heir to this eighteenth-century family estate. He was a founder of the Delaware County Institute of Science and author of the 1862 "History of Delaware County." While a Senator, as chairman of the Education Committee, he drafted the 1836 law providing for this State's first public school code.

On Collenbrook property past barn and between house and carriage shed, .1 mile off Mansion Ave., Drexel Hill, PA, United States

Thomas Garrett. Born at Riverview, near here, Garrett was a prominent abolitionist and Underground Railroad activist. He moved to Wilmington, DE in 1822, and sent many fugitive slaves to his brothers at Riverview, Fernland Farms, and here at Thornfield. He was a devout Quaker and associate of Harriet Tubman and William Still. Although convicted and fined, he aided 2,700 freedom seekers; his commitment to their emancipation was unwavering.

Garrett Rd. & Maple Ave., Drexel Hill, PA, United States