1867, 15 November
[The execution of Emperor Maximilian] Your readers may recollect my alluding to some photographs of the coat and waistcoat of the unforunate Emperor Maximilian.

Magazine clipping
Internet - Original source ill-defined
British Journal of Photography, 15 Nov 1867
 
(Alan Griffiths, 15 July 2021) I'm indebted to Dr. Michael Pritchard (RPS) for bringing this to my attention.
 
LL/112130