Prize of £1,000 offered by Mr. C. Markham of Chesterfield, England, for an electrical storage battery locomotive for use underground in coal mine. From: The Secretary of State. No: 3rd pn. Date: 8th October, 1923., 1923

Prize of £1,000 offered by Mr. C. Markham of Chesterfield, England, for an electrical storage battery locomotive for use underground in coal mine. From: The Secretary of State. No: 3rd pn. Date: 8th October, 1923., 1923, MSS Archives.2003/1.WPHC 4/IV.1923. File 2833/1923, Box: C3027216; Reel: AU Microfilm 79-255; Reel: MSS Microfilm 0356. WPHC 4/IV : Inwards correspondence, 1923., MSS Archives.2003/1.WPHC 4/IV.1923. Western Pacific Archives, University of Auckland. https://archives.library.auckland.ac.nz/repositories/8/archival_objects/228948 Accessed November 23, 2024.