Telegram, 27 January 1873
Telegram, 20 January 1873
Telegram, 12 January 1895
Telegram to Howard Primrose
Sir William Dawson
Sir William Dawson
Saccammina Eliana
Report of committee
Report of a Committee of the Annual of the Royal Society of Canada on proposals for an Imperial Union of Geological Surveys and Societies
Reference note
Protokoll der Februar-Sitzung