Casgliadau Arlein

Full title - "The General Post Office Trials of Guglielmo Marconi's Wireless Telegraphy Apparatus in May 1897". 12 pages with 2 diagrams. Compiled by donor. Typscript on A4 paper which is stapled at top left hand corner. An exposition of the events surrounding the GPO trials of Gulielmo Marconi's wireless telegraphy trials in May 1897, connecting Flat Holm with Lavernock Point and Brean Down.