Most of the information in this History of ASCL pages of this site – both textual and visual – derives from the ASCL archive, which was organised and catalogued for the first time during 2021-22.

Beyond the ASCL archive, the main documentary sources drawn upon in the History of ASCL pages are: MSS 188 (AHM) and MSS 58 (HMA) at the Modern Records Centre, University of Warwick; P.H.P. Gosden, The Evolution of a Profession (Oxford: Basil Blackwell, 1972 ); Mary Price and Nonita Glenday, Reluctant Revolutionaries: A Century of Headmistresses (London: Pitman, 1974); Shirley Chapman, 116 Not Out (Leicester: Secondary Heads Association, 1990); and the archive of HMC (The Heads’ Conference).     

     
For images from beyond the ASCL archive, the identity of copyright holders can be found in the list of picture credits.

Staff at ASCL have been enthusiastic supporters of the 'ASCL 150' project, especially Angela Stewart who has done so much to preserve ASCL’s more recent records.