Copy letter from Ian MacAlister, Secretary of the Royal Institute of British Architects, 9 Conduit Street, Regent Street, W.1., to the Secretary of the Royal Society, Burlington House, W.1. Informs the Royal Society that the the Royal Institute of British Architects (RIBA) is planning a programme to commemorate the Bicentenary of Christopher Wren's death on 25 February 1923. Informs them that they feel it appropriate to invite many bodies of London, to celebrate Wren as a mathematician, astronomer, scientist and Londoner. Asks the Royal Society to appoint a representative to serve on the Grand Committee to make arrangements for the Commemoration proceedings. 30 June 1922