Secretary-General Javier Perez de Cuellar agreed to dedicate a plaque to honor the architects and approved the plaque design in July 1991.

Secretary-General Javier Perez de Cuellar agreed to dedicate a plaque to honor the architects and approved the plaque design in July 1991. The plaque was donated anonymously, however, Sir Brian Urquhart, Mr. George Dudley (right-hand assistant of the Chief architect, Mr. Wallace Harrison), and other collaborators of the architects, provided the plaque. The ceremony for the plaque took place on 17 December 1991, where the Secretary-General made a short statement about the dedication.