Lesley Blanch's novella-length introduction to the Memoirs of Harriette Wilson, the reigning courtesan of Regency London, was first published in 1955 in New York, where she was then living with her diplomat-novelist husband, Romain Gary. The Wilder Shores of Love, for which Blanch is chiefly remembered, had been published to acclaim the previous year. Harriette Wilson lived among and was an integral part of a wealthy society where privilege, arrogance...