S.M. Leake A Historical Account of English Money.

H.N. Sealey Coins, Currency, and Banking.

Macpherson Anderson's History of Commerce.

Bishop Fleetwood Chronicon Preciosum, or an Account of English Money, etc. etc. London, 1707

Bishop Nicolson English, Scotch, and Irish Historical Libraries.

Thorold Rogers History of Prices.

Tooke and Newmarch History of Prices.

Sir Dudley North Discourses upon Trade. 1691.

Sir Walter Raleigh Works (Oxford Edition).

Sir Robert Cotton Posthuma.