i. 25 May 1841 - Leipzig - Possible exchange of seeds with Shepherd & Loddiges. Plants. (French).
ii. 20 January 1842 - Leipzig - Publications. (Note by W.P.) (French).
iii. 1 October 1851 - Leipzig - From Executors of the late Gustav Kunze reporting that his collections all bequeathed to Leipzig Botanical Garden.