Hugh John Lofting (14 January 1886 26 September 1947) was an English author trained as a civil engineer, who created the classic children’s literature character of Doctor Dolittle. It first appeared in illustrated letters to his children written by Lofting from the British Army trenches in the First World War.
Source:Wikipedia
eBooks: Doctor Dolittle’s Post Office | The Story of Doctor Dolittle | The Story of Mrs. Tubbs | The Voyages of Doctor Dolittle