Henry Fox Talbot
1841, June
River Thames in London, from Talbot's Cecil Street flat

Salt print, from calotype negative
National Science and Media Museum
1937-366/50: Schaaf 3705
 
While the negative for this is not known to have survived, there are three other known prints.
 
Talbot's 16th c photograph, Posted on 8th January 2016 by Larry J Schaaf
foxtalbot.bodleian.ox.ac.uk/talbots-16th-c-photograph/
 
LL/64149