Conference of Lighthouse Authorities (1929): Memorandum prepared by Messrs D. and C. Stevenson, M.M. Inst. CE, Engineers to the Clyde Lighthouses Trustees, on the trial of a fog signal sounded through the air and transmitted simultaneously by wireless telephone
- Reference No:
- C DPD/1/3/12/5/12
- Dates:
- 8 Apr 1929
- Description:
- Format:
- Archive Item
- Extent:
- 1 item
- Language:
- Access Conditions:
- Access will be granted to any accredited reader
- Repository:
- Hull City Archives
- Collection:
- Records of Humber Conservancy and the Humber Ports (Records deposited by Associated British Ports and its Predecessors)