Among its most prominent developers was financier Clarence Howard Clark Sr. (1833 – 1906), who built dozens of rowhouses, donated land for the Walnut Street West Branch of the Free Library of Philadelphia, settled a tax assessment by founding the 9.1-acre Clark Park, and established his mansion on the grassy block that today holds the Penn Alexander public elementary school.
Among its most notable contributors was financier Clarence Howard Clark Sr. (1833 – 1906), who constructed numerous rowhouses, donated land for the Walnut Street West Branch of the Free Library of Philadelphia, resolved a tax dispute by founding the 9.1-acre Clark Park, and established his estate on the grassy block that today houses the Penn Alexander public elementary school.