Mothers of today have available to them an unprecedented quantity and variety of information concerning the process of conceiving, bearing, birthing and raising a child. Yet it is only a little more than half a century ago that mothers were firmly convinced of the authority of maternal instinct. From experiential knowledge shared verbally amongst female relatives and friends, to a profusion of ‘expert’ information accessible virtually and instantaneously, the ways women learn about mothering have shifted dramatically over the past 70 years. Drawing upon oral history interviews and historical child-rearing material, this article illuminates shifts in the source, content and transmission of advice to Australian mothers since 1945.