The Terra Data: The Dumarest Saga Book 22

Only Earl Dumarest himself believed that there was ever a planet called Earth. He had been seeking it a long time - but nobody else at the crowded galactic centre believed in it. During his quest he had acquired some bits of information - a Terrestrial zodiac, and authentic painting of Luna, a general series of hints that he was getting closer.

The he learned of a man on Elysius who knew where Earth was, and who had the special coordinates that would take a starship directly to it. Though th...