The Salt Museum
Located in Northwich, Chesire in the UK, the Salt Museum conserves and promotes the history of the salt industry of the Cheshire salt towns.
There are photographs from the 1870s onwards that show many aspects of the salt industry such as mining and trasporation. There are publications for sale such as "The Supply of Brine" (45 pence), "Roman Salt Making" (25 pence), "The Salt Tax" (25 pence), and "Salt in the Home" (35 pence).
[Thank you Mike West for telling us about this museum]