Correspondence of Thomas Sidney Powell with his mother and father, regarding his social life, travels and military affairs. Dated as: 29 Dec 1836-18 0ct 1857
Correspondence of Thomas Sidney Powell with Col Valiant and Col Michel regarding his health and military affairs etc. and with James Sohee and Sons regarding his account with them.
Map (published 1834) of the Indus River and of the neighbouring Countries comprising Sind, parts of Baluchistan and Afghanistan, Kashmir, Punjab, Rajputana etc by the Surveyor General of India (marked with Thomas Sidney Powell's route from Kabul to the mouth of Indus 1839-40).