ANDREWS, E.C., Department of Mines. Geological Map of the Sydney District. / Map of the Sydney District - Geological Structure Contours. Alfred James Kent, Government Printer, 1925. 820 x 630 mm. Imprimée en couleurs. Large color printed map + 1 map on transparent paper that overlaps the previous one. 10 cm tear along the center fold, 2 small angular losses with slight loss in the map. Geological map of the Sydney district. Scale: 2 miles to 1 inch. Prepared under the direction of E.C.Andrews, Department of Mines, NSW. Although geological observations had been made in the Sydney District in the early part of the 19th Century, the first systematic work in this field was published in 1867, when Rev. W. B. Clarke published his ‘Remarks on Sedimentary Formations in New South Wales’. Wilkinson, David, Etheridge, Curran, and others added to this knowledge before 1900; and all later workers owe a special debt to these pioneers, most of whose surveys were carried out under primitive conditions of access and transport. Since 1900, Came's memoirs on kerosene shale deposits (1903) and the Western Coalfield (1908), and Willan’s Geological Map of the Sydney District (1925) have covered large parts of the Sydney Sheet.