Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer Mary Caroline Cosby, Practice Areas No known practice areas. is located in the city of Valley Forge, the state of Pennsylvania. Attorney legal address The Vanguard Group, Inc.V 26PO Box 2600Valley Forge, PA, 19482. For more information, please call (610) 503-2279 Your comments* (not for publishing) * — Required information Mary Caroline Cosby ← View details The Vanguard Group, Inc.V 26PO Box 2600Valley Forge, PA, 19482, Valley Forge, Pennsylvania (610) 503-2279