P. de Vanssay de Blavous Obituary: Ingénieur hydrographe général C.D.M. Rollet de L'Isle PDF (English)
P. de Vanssay de Blavous Method of Calculation for the Adjustment of Observations results PDF (English)
Henri Bencker Chronological List of the main Maritime Discoveries and Explorations: Chapter I PDF (English)
Henri Bencker Chronological List of the main Maritime Discoveries and Explorations: Chapter II PDF (English)
Henri Bencker Chronological List of the main Maritime Discoveries and Explorations: Chapter III PDF (English)
Henri Bencker Chronological List of the main Maritime Discoveries and Explorations: Chapter IV PDF (English)
Henri Bencker Chronological List of the main Maritime Discoveries and Explorations: Chapter V PDF (English)
Henri Bencker Chronological List of the main Maritime Discoveries and Explorations: Chapter VI PDF (English)
Henri Bencker Chronological List of the main Maritime Discoveries and Explorations: Alphabetical Index of Place Names PDF (English)