Merrell's Gallery (Lancaster, MO)
1871, 24 June
Advert for "Photograph, Ambrotype, and Gem Pictures, Made in the Neatest Style of the Art, ay Merrill's Gallery, (Over French's Store) Mancaster, MO."

Advert
Internet - Original source ill-defined
(Alan Griffiths, 24 June 2022) 24 June 1871, Lancaster (Missouri) Excelsior, page 4.
 
I'm indebted to Michael L. Moore for bringing this to my attention.
 
LL/120924