#OTD in 1860.
The first of Charles Dickens' literary sketches generally titled The Uncommercial Traveller appears in his magazine All the Year Round.
He seems to have chosen the title and persona of the Uncommercial Traveller as a result of a speech he gave on 22 December 1859 to the Commercial Travellers' School in London, in his role as honorary chairman and treasurer.
https://en.wikipedia.org/wiki/The_Uncommercial_Traveller
The Uncommercial Traveller at PG:
https://gutenberg.org/ebooks/914