This translation was a collaborative undertaking. It was begun by David Macey, who completed a first draft of all but one chapter in Il y a deux sexes before his death in 2011. Catherine Porter revised his draft and translated the missing material along with one chapter each from Gravida and Génésique; she also revised the draft of a second chapter from Génésique translated by Eileen Powis. Along the way, Porter supplemented the references and added a number of translator’s notes. Research assistant William Burton tracked down numerous references and English-language versions of citations, with support from the editorial staff at Des femmes publishing house. Marie-Aude Cochez read the completed translation carefully for accuracy and fluency. Sylvina Boissonnas oversaw the entire project, serving as coordinator and consultant. Antoinette Fouque was the ultimate arbiter on matters of fact and terminology.