President Polk’s message to Congress on December 5, 1848, informed that body—and thus the country—that the reports “of the abundance of gold” in California, though “of such an extraordinary character as would scarcely command belief,” had been “corroborated by the authentic reports of officers in the public service.” The President’s message touched off the gold mania in the East. There were, of course, by this time thousands in the “diggings,” but they were mostly from California or Oregon.
Most of the Argonauts traveled to California by the various overland trails, but many, especially from the East, went by sea. In 1849 almost all those who traveled by ship either went “round the Horn” or by water to Panama, across the isthmus, and then again by ship to California. In 1849 apparently only one group of gold seekers chose to cross Central America at Nicaragua rather than Panama. The next year, however, as reports came back of the various disadvantages of the all-water route and of the Panama crossing, more and more of the Argonauts turned to Nicaragua.