Dwyer & O'Grady, Inc., a literary agency that represents juvenile writers and illustrators, recently sent out a reminder that they have moved all offices to Florida. Evidently, they had different locations around the country at different points (and were most recently in New Hampshire), but now do all business at the address below.
Also note that the agency is still closed to unsolicited queries/submissions and has been for some time. The only real reason you would need to use their new address below is if you, per chance, were lucky enough to meet an agent at a writers conference and they OK'd you sending some work to them.
Dwyer & O'Grady, Inc.
Agents for Writers & Illustrators of Children's Books
725 Third Street
P.O. Box 790
Cedar Key, FL 32625-0790
(603)-375-5373 - fax