Not sure if this has appeared here before. Interesting article on London snuff shops from 1839. Includes references to aging snuff. Note the poem at beginning. Starts at page 117. http://books.google.com/books?id=RisaAQAAIAAJ&pg=PA119&dq=fribourg+%26+treyer&hl=en&sa=X&ei=bP9qUqLUEqi9yAG2sIDACg&ved=0CFkQ6AEwCQ#v=onepage&q=fribourg%20%26%20treyer&f=false
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