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  • This atlas of isoseismal maps of Australian earthquakes documents the ground intensity effects of 79 earthquakes. Most of these earthquakes originated in Queensland, northern New South Wales, and South Australia before 1982, and were not documented in the first atlas {BMR Bulletin 214) because their maps were not available at the time of publication; the remainder occurred in 1982 and 1983. The earliest map is for the November 1875 Mackay (Qld) earthquake and the most recent for the 1983 Beltana (SA) earthquake. This Bulletin and Bulletin 214 incorporate 163 maps from 149 earthquakes felt on the Australian continent, and provide a comprehensive database for earthquake risk assessments. Although the largest Australian earthquakes were included in Bulletin 214, this atlas contains maps of several early earthquakes of significance. These include the 1883 Gayndah (Qld), the 1886 Yass (NSW), and the 1913 Ravenswood (Qld) earthquakes, which had Richter magnitudes of 5.9, 5.5, and 5.7 respectively. The atlas is arranged in the same format as Bulletin 214: the isoseismal maps are presented in chronological order, each facing a page containing a brief description of the earthquake and the methods used to obtain the intensity data.