 This letter has been designated the "Call To Foreigners" by modern historians.While Marsh does not take credit as the author it is universally agreed that it is his work.The meeting's purpose was to, "promote the union and harmony and best interests of all the foreigners resident in California..." Marsh also participated in the Battle of Providencia (also known as the Second Battle of Cahuenga Pass), and managed to persuade Americans on both sides that it was foolish to fight one another.