Adam Levine has done extensive research since 1998 into the historical topography of Philadelphia, mostly as a consultant to the Philadelphia Water Department. As part of this work, he manages the PWD Historical Collection, and also maintains an extensive website of watershed and water supply material at www.phillyh2o.org. In a related career path, he writes about gardening, and is the author of many articles and four books, including A Guide to the Great Gardens of the Philadelphia Region (Temple, 2007).  In another life, he worked full time as a journalist, both freelance and as a staff writer for the Gloucester County Times in Woodbury, NJ.