1. Anon. (1763) The Universal Director; Or, the Nobleman's and Gentleman's True Guide London: Mortimer.
2. Davidson, R. (1781) The Elements of Geography, Short and Plain London: T. Wilkins.
3. Edgeworth, M. & Edgeworth, R. L. (1801) Practical Education (2nd ed.) London: J. Johnson
4. Matthews, J. (1868) Harry Crawford, How He Learned to Make His Own Dissected Maps and Picture Puzzles London: Christian Book Society.
5. Shefrin, J. (2003) Such Constant Affectionate Care: Lady Charlotte Finch, Royal Governess, & the Children of George III Los Angeles: Cotsen Occasional Press.