Report of the joint committee appointed by the lords of the committee of privy council for trade and the atlantic telegraph company to inquire into the construction of submarine telegraph cables
Les postes et les télégraphes sous le gouvernement de la défense nationale / M. A. Lallié
Asian Telecom 89: Special session of the world telecommunication forum : Singapore / Singapore Telecoms; International Telecommunication Union
Tabellas de taxas : segundo o regulamento de Londres applicaveis aos telegrammas internacionaes transmitidos pelas estações portuguezas do continente, ilhas da Madeira e S. Vicente de Cabo Verde