100th Anniversary American Institute of Architects 1857-1957

First Day of Issue "OCTAGON" WASHINGTON, D. C. 100% Anniversary AMERICAN INSTITUTE of ARCHITECTS 1857-1957 Art Craft 13N CENTENNIAL N. Hote OB FEB 23TED STATES P 9-1000 1957CENTENNIAL INSTITUTE OF ARCHITECTS 1957 3¢ FIRST DAY DOFISSURTAGE CENTENNIAL Harold L.Bent P.O.Box 487 Rochester 2, N.Y. INSTITUTE OF ARCHITECTS 1957 3¢ CENTENNIAL INSTITUTE ARCHITECTS 1957 INSTITUTE OF ARCHITECTS 1957 3¢ UNITED STATES POSTAGE