Town Planning Institute
Date granted: 15 June 1959
Name changes: Royal Town Planning Institute
Date granted: 15 June 1959
Name changes: Royal Town Planning Institute
Date granted: 21 December 1959
Date granted: 8 April 1960
Date granted: 3 August 1960
Date granted: 26 October 1960
Date granted: 2 August 1961
Date granted: 2 August 1961
Name changes: Institute of Electronic and Radio Engineers
Date granted: 24 October 1961
Date granted: 24 October 1961