Captain Salt in Oz (1936) is the thirtieth in the series of Oz novels created by L. Frank Baum and his successors, and the sixteenth written by Ruth Plumly Thompson. It was illustrated by John R. Neill. Captain Samuel Salt (from Pirates in Oz) sails the Nonestic Ocean and discovers Ozamaland, a legendary land of flying animals, as well as the famous White City of Om, and other places.
Ruth Plumly Thompson (27 July 1891 – 6 April 1976) was an American writer of children's stories, best known for writing many novels placed in Oz, the fictional land of L. Frank Baum's classic children's novel The Wonderful Wizard of Oz and its sequels.