Map Lovers’ Monday: Topography of Philadelphia from 1863
Roberts Mill, Wingohocking Creek, 1871
Down Under III: A walk in the Dobson’s Run Storm Relief Sewer, June 15, 2010
Requiem for a stream: Still House Run in Manayunk
Filling valleys and other lowlands, cutting down high ground, piping streams into sewers, filling marshland, dredging and damming streams and rivers, and any other activities or infrastructure designed to alter the original topography of the city to more readily accommodate real estate development.