Plan Of The Islands Called Peros Banhos. Lieut. Archibald Blair, 1786. [Scale of] Nautic Miles [approximately 1:360,000]. Plan Of The Eleven Islands And Governor Boddam's Harbour. Lieut. Archibald Blair, 1786. [Scale of] Nautic Miles [approximately 1:91,000]. A. Dalrymple, 16 January 1788.
Plan Of The Calcutta's Track Near The Chagos. From a MS. received from Capt. William Thomson. [Scale of latitude approximately 1:730,000.] Plan Of The Callcutta's Track Over The Basses De Chagos. Will. Nicholls. [Scale of latitude approximately 1:730,000.] A. Dalrymple, 22 October 1784.
Plan Of Part Of The Island Chagos Or Diego Garcia. From a Survey made in the Drake Ketch 1774. [Scale of latitude approximately 1:91,000.] A. Dalrymple, 12 July 1784.
Chart Of The Eagle's Track [Chagos Archipelago] 1772. Joseph Mascall Voluntr. 1774. From a MS at the East India House. [Scale of latitude approximately 1:730,000.] A. Dalrymple, 17 September 1784.
Chart Of The Track In The Salomon, Capt. M. Bourdé [Chagos Archipelago]. From a French MS. received at Pondicherry in 1776, from M. Bourdé. [Scale of latitude approximately 1:360,000.] Inset: Plan Of Eleven Islands Being The Same That Are Named Salomon Islands By M. Bourdé Called Governor Boddam's Islands And Harbour By Archd. Blair, 1786. [Scale of] Nautic Miles [approximately 1:91,000]. A. Dalrymple, 14 August 1784.
Plan Of The Soundings On The Chagos In The Speaker, Capt. James Dewar, 1763. From a MS by Capt Robert Scott then an officer on board. [Scale of latitude approximately 1:180,000.] A. Dalrymple, 14 August 1784.