Dorfman, Mark. But for service : a history of the credit union movement in Pennsylvania / Mark H. Dorfman. - 1st ed. - Harrisburg, PA (4309 N. Front St., Harrisburg 17110) : Pacul Services, 1984. - 430 p. : ill. ; 25 cm. Includes index. Bibliography: p. 411-413. LCCN: 84062068 Subjects--Topical Terms: Credit unions--History.--Pennsylvania LC Class. No.: HG 2038.P4 / D6