Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer David M Porter, Practice Areas Government Attorneys. is located in the city of Glyndon, the state of Maryland. Attorney legal address 4611 Butler RdGlyndon, MD, 21136-3858. For more information, please call (410) 767-6358 Your comments* (not for publishing) * — Required information David M Porter ← View details 4611 Butler RdGlyndon, MD, 21136-3858, Glyndon, Maryland (410) 767-6358