Published in the early 20th century, William Isaac Marshall’s collection of essays meticulously dismantles the highly romanticized myth that missionary Marcus Whitman single-handedly saved the Oregon Territory from British control through a heroic cross-country winter ride in 1842. Relying heavily on primary source documents, Marshall proves that the United States government was already fully committed to retaining Oregon, and that Whitman’s arduous journey was actually undertaken to prevent the closure of his own struggling mission by its governing board. A keen insight drawn from the text is how the enduring popularity of the "Whitman saved Oregon" legend exposes the vulnerability of historical narratives to religious and nationalist propaganda, demonstrating how early writers eagerly embraced a fabricated, providential savior figure to retroactively justify America's westward expansion. By prioritizing rigorous archival evidence over emotional storytelling, Marshall's work fundamentally corrected the historical record and set a new standard for historiography regarding the acquisition of the Pacific Northwest.