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Talbotype, or Sun Picture Rooms, 122, Regent-street. - Nicolas Henneman...
1847, 3 August
Internet - Original source ill-defined
Morning Post, 3 August 1847
I'm indebted to Larry J. Schaaf for bringing this to my attention.
Larry Schaaf, 2 March 2018, "Taken From The Actual Objects Which They Represent", The Talbot Catalogue Raisonné - Blog