Part of A. S. "Pete" Peterson's short story series, Tales of an Unremembered Country. In this second tale, "The Oracle of Philadelphia," Thurston follows famed captain Nathan Winthrop on an expedition into the polar sea where he hopes to find the Northwest Passage. What he discovers instead is a baffling oddity named John Obadiah, who's faith in a strange prophetess stretches the boundaries of possibility.