Northern Australia Exploration Trio 1 - Across Unknown Australia. Michael Terry, pub. Herbert Jenkins, London 1925. 311pp. + numerous photo plates. Dalby to Broome by car in 1922. Terry, a British refugee from WWI led many expeditions (mostly prospecting) in the '20s and 30s. Boards marked, especially to the spine, some toning to the text - reasonable well bound copy with one loose plate. 2 - Man Tracks. Ion Idriess, pub. Angus & Robertson, Sydney 1941 (National Edition). 330pp. + many photo illustrations. Idriess' account of the Kimberleys involving a police patrol. Aged, slightly worn green leatherette boards, toned endpapers and very mildly toned text. Binding good. 3 - Patrol Indefinite: The Northern Territory Police. Sidney Downer, pub. Rigby, Adelaide 1963. 221pp. + about 30 photo illustrations. Downer was a journalist with the Adelaide Advertiser. Overview of anecdotes and stories of Police operations from the beginning to current. Worn and stained jacket, Blue cloth boards reasonable for age. Text generally clean with occasional water marks to top edge of some pages. Not overt. 22x15cm (largest)