Correspondence of Sidney Henry Powell to his father Richard Ashmore Powell, "Nelly" and "Barbara" from Koomeria, Gurzia, Ranikhet, Lahore and Quetta regarding his experiences in India.
Correspondence of Sidney Henry Powell from his father (Richard Ashmore Powell) his mother, and other members of the Powell family regarding social life in England etc.
Letter to Sidney Henry Powell from The Illustrated News and Sketch Ltd regarding his attempt to acquire a copy of a number of 1840 giving a picture of H M S James.
Letters from Ina Netzen to her cousin Sidney Henry Powell from Victoria (British Columbia) regarding family affairs etc. and from Andrew Bond regarding a visit to London. Dated as: 29 Apr 1926-2 0ct 1931
Correspondence of Sidney Henry Powell regarding a gift to the British Museum, the Skelton Trust, card games, the title to 7 Alfred Place, London and 56 Drayton Gardens, London, a lecture on the history at Deal and a gift of photographs to the Royal Botanic Gardens.