Urban foraging, a pick-your-own buffet; Philadelphia, PA

Urban foraging, a pick-your-own buffet Philadelphia Inquirer 08/05/2010:
A peach tree grows in South Philadelphia - at the back of a scrubby little parking lot, at the corner of Seventh and Catharine Streets, overhanging a whitewashed cinder-block wall.
It's a beautiful tree, almost 15 feet tall, its branches heavy with clusters of luscious-looking peaches. The sun has turned the fruit near the top a deeper shade of red. It's 10 in the morning and it's already hot, and I want one.
The tree is one of several listed on the Philadelphia Food Harvest Map, a collaborative, user-sourced Google map that allows people to add locations in the city and suburbs where edible plants are growing in public spaces.