Doctor Dolittle
The internal chronology of the books is somewhat different from the publishing order. The first book is followed by "Doctor Dolittle's Circus" (1924), "Doctor Dolittle's Caravan" (1926), "Doctor Dolittle and the Green Canary" (1950), and "Doctor Dolittle's Post Office" (1923). Only then follows the second book, "The Voyages of Doctor Dolittle" (1922), continued by "Doctor Dolittle's Zoo" (1925). After that, the publishing order is restored; "Doctor Dolittle's Garden" (1927) is followed by "Doctor Dolittle in the Moon" (1928) and "Doctor Dolittle's Return" (1933), ending with "Doctor Dolittle and the Secret Lake" (1948).