Le Guin published her first novel in 1966. It was called "Rocannon's World". Ace Books published it. Two more Hainish novels, "Planet of Exile" and "City of Illusions" were published in 1966 and 1967. These three books became the Hainish trilogy. The first two were each published as half of an "Ace Double": two novels bound into a paperback and sold as a single low-cost volume. "City of Illusions" was published as a standalone volume. Le Guin was getting greater name-recognition. Critics paid more attention to these books than to Le Guin's short stories. Several science fiction magazines reviewed them, but the critical response was still muted. The books had many themes and ideas also present in Le Guin's better known later works, including the "archetypal journey" of a protagonist who undertakes both a physical journey and one of self-discovery, cultural contact and communication, the search for identity, and the reconciliation of opposing forces.