"1981Z"^^ . . . "Response Dynamics, Inc. is a privately held Vienna, Virginia-based direct marketing company. It was founded in 1981 and specializes in political fundraising and direct mail marketing. Most direct mail fundraising firms cater to a particular partisan segment, and RDI considered one of the top firms servicing conservative causes.The company boasts in-house copy editing, art design, database management, and a list brokerage service."@en . . . . "Response Dynamics, Inc."@en . .