In a long and interesting life, Peter Ryan has been especially fortunate in getting to know quite a few influential Australians and some little-known but unforgettable characters. Brief Lives offers pen portraits of fifteen of them, all but one of them male. The solitary female, Ida Leeson, had the distinction of being the ‘presiding genius of the world-famous Mitchell Library’, held the rank of army major in World War II, and was perhaps regarded as an honorary male in the Directorate of Research and Civil Affairs (DORCA), a rather peculiar army unit where Ryan met her in 1944.