i. 16 October 1844 - Kew - Books for friend in India. Twelve items. (W.P. has priced nine items.)
ii. 29 October 1855 - Kew - W.P. asked if he would undertake continuation of Flora Indica etc. (Reply by W.P.).
iii. 8 February 1865 - Kew - Flora Indica.
iv. n.d. - Kew - E. India collection for various gardens and botanists.
v. n.d. - Kew - Possible flora of British West Indies. (W.P. adds possible costs.).
vi. n.d. - Kew - Horticultural Society Sale. Plants for Dr. Thomson. Publications.