John F. Kennedy Center, Washington,D.C. OSA designed all the stage operational systems and introduced the first single failure proof light bridge in an American theater. Other designs included novel low friction, low inertia, double purchase fly systems, lifts, and decorative and sound retardant motorized fire walls, separating the stage from the side stages and auditoriums.All systems are still functional. Edward D. Stone, Architect

General Electric Attraction, New York World's Fair A rotating ring, more than 160 feet in diameter, was designed by OSA to carry an audience of 1,400 people around the stationary stages. After the end of the World's Fair this large turntable was moved to Disneyland where it was recently modified in appearance and it is still in operation. Welton Becket and Associates, Architects

Aerial Tramway, Bronx Zoo, New York City The functional requirements were evaluated and established to carry 2,400 guests per hour, over 2,400 feet distance between the terminals. The Swiss manufactured equipment was modified by OSA to comply with stringent NY State and ANSI safety requirements for Areal Passenger Tramways. Work included design of towers, terminals and additional safety systems.