Background
The Pacific Mail Steamship Company was established on April 12, 1848 to carry US mail on the Pacific leg of a transcontinental
route via Panama. Chief Officers of the Pacific Mail Steamship Company were: Aspinwall, William Henry, 1807-1875; Bartlett,
Edwin, 1796-1867, Chauncey, Henry; Howland, Gardiner Greene, 1787-1851