“PHILADELPHIA — There’s a straight line that goes from David Drap to David Brown, but you cannot find it in most other cities.
“Mr. Drap, 43, could be seen recently assembling pieces of plywood around a twin mattress under a highway overpass, trying to build a shelter amid detritus left by a half dozen other homeless people. Mr. Brown, 57, lived on the streets for 25 years until he finally found housing through Project HOME, a local non-profit organization. He now lives in a building with a computer lab, a library and a fitness room.”