Mahlon Day (1790-1854) was a Quaker, publisher of children's books, printer, and bookseller in New York City. This is a contemporary copy of a diary kept by Day while on a tour of the West Indies (November 1839-April 1840) in the company of Joseph John Gurney, the English Quaker philanthropist, minister, and writer. In most of the places they visited, they did considerable sightseeing, held religious services for all faiths, and were entertained by many residents. They were particularly interested in education, religion, and the condition of the Black population, especially on the free islands as compared to those that still permitted slavery. Day also includes many rhymes composed by Gurney to commemorate particular occasions. Persons whom they visited include Sir W.M.B.G. Colebrooke and Nathaniel Gilbert of Antigua, and John and Maria Candler of Jamaica.