


Lockwood's index of United States telephone patents to Dec. 31, 1900

Album, compiled and written, documenting the laying of the Durban-Mauritius and the Sierra Leone-Ascension submarine cables

Album, compiled and written, documenting the laying of the German-Atlantic submarine cable

Album documenting the laying of the first three stages of the Mauritius-Rodriguez-Cocos-Fremantle-Glenelg submarine cable

Album documenting the laying of the Porthcurno-Madeira-St. Vincent submarine cable

'Radio Division 37 Staff Statistics'

Railway Signal Volume 24 (1906)

AVRO Manchester Tender Specification

A typed letter from Walter Maunder to Miss Orr regarding origin of constellations
