Guide Books and Maps - England - Map of London Underground Routes and Stations. Published by Johnson, Riddle & Co. Ltd. London.

Jones, Ray, Guide Books and Maps - England - Map of London Underground Routes and Stations. Published by Johnson, Riddle & Co. Ltd. London. (Undated), [UMA-IT-000146127]. University of Melbourne Archives, accessed 03/04/2026, https://archives.library.unimelb.edu.au/nodes/view/635526