The Elfreth's Alley is a 501(c)3 nonprofit educational organization that uses the Alley as a lens to interpret the lives, lifestyles, and livelihoods of ordinary Philadelphians from the time of the City's founding through to the present day. The Association preserves the Elfreth's Alley National Historic Landmark District as a rare example of a once commonplace working class community from the late 18th and early 19th centuries. EAA operates the Elfreth’s Alley Museum located in Houses 124 and 126, a pair of rowhouses built in 1762 by Jeremiah Elfreth. The Museum interprets 300 years of daily life for the ordinary Philadelphians who helped to build and sustain the city. More than 250,000 individuals visit the Alley every year and nearly 45,000 of those people visit the Museum Shop. Nearly 7,000 people, including 2,000 school children tour the Museum annually. In addition to providing public tours 256 days each year, EAA sponsors two open house events that attract nearly 1,500 attendees each year. EAA also partners with neighboring institutions to provide additional programs for special groups like the Girl Scouts, Elderhostel, and KOA.