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