Title: The big rivers
Subjects: Description and travel
Places: Darling River (Qld. and N.S.W.), Darling River Valley (Qld. and N.S.W.), Murray River (N.S.W.-S. Aust.), Murray River Valley (N.S.W.-S. Aust.), Murrumbidgee River (N.S.W.), Murrumbidgee River Valley (N.S.W.)