ex "London Magazine". Thomas Kitchin was one of the most notable English cartographers of the eighteenth century. He was both an engraver and publisher of considerable reputation who was made Hydrographer to King George III. He worked with many of his contemporaries on various projects. His first notable work was contributing the maps for the "London Magazine" from 1747 to 1760. This magazine included maps in response to John Hinton's rival "Universal Magazine" begun earlier in the same year. The map of Hertfordshire was published in the May 1748 issue. Hodson 33.1; Hodson 229.