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Gerry Schweiger a long time Mt. Airyite, is passionate about history and came to his love for the Wissahickon Valley in retirement.
Friends of the Wissahickon , founded in 1924, is a 2,000-member nonprofit organization that works in partnership with Philadelphia Parks & Recreation to restore historical park structures, eliminate invasive plant species, and restore trails throughout Wissahickon Valley Park. Learn more at fow.org.