Captain Salt in Oz (1936) is the thirtieth of the Oz novels created by L. Frank Baum 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 as well as many other places.
It is the only Oz book not to take place in Oz and deals only indirectly with its inhabitants. Captain Salt goes from island to island claiming them in Princess Ozma's name.