 The method of qualifying by passing an examination which the RIBA had recognized as allowing exemption continued in the period when the 1931 Act was in force, and remained available under the later legislation.By a further development, from 2007 a Chartered Member of the RIBA may apply for the registration of a Chartered Practice in respect of a business providing architectural services and comprising one or more Chartered Members meeting criteria for, and operating in accordance with, a prescribed scheme.The historian will find some source material in the Archive which the RIBA has made accessible at the Victoria and Albert Museum, and in books, periodicals and other publications of the period which have been deposited and retained in the British Architectural Library (of the RIBA).