William D Mccool List of directors and agents named William D Mccool. Found 2 results. WILLIAM D. MCCOOL Registered Address: 160 W. MAIN STREET ELKTON MD 00000 Appointed in one company. Go To Profile WILLIAM D. MCCOOL Registered Address: 160 W. MAIN STREET ELKTON MD 21921 Appointed in one company. Go To Profile