These photographs were used by Frank Walker (1861-1948) who was by profession a printer and stationer, however he is better known as an historian and was instrumental in the founding of the Royal Australian Historical Society. At the inaugural meeting he was elected to the Council and over his career served as Honorary Treasurer, Vice-President, Honorary Librarian and as President from 1912-1913. Walker travelled throughout New South Wales gathering historical evidence, taking photographs, lecturing and writing articles and books on Australian history. He was particularly interested in exploration and local history and this photograph of Cox's Road near Woodford was probably taken by him during his studies of the successful crossing of the Blue Mountains by Blaxland, Wentworth and Lawson. The other photographs were no doubt used by Walker in an article, book or lecture. Robert Menzies (1894- 1978) was Prime Minister of Australia between 1939-1941 and again between 1949-1966. John Curtin (1885-1945) was Prime Minister between 1941-1945.