Daniel D. Page was born in York County, Maine in 1790, and moved to Saint Louis, Missouri in 1818. He was a grocery merchant and baker, amassed large real estate holdings, and in 1829 was elected the second mayor of St. Louis. In 1848, he established the banking firm of Page and Bacon with his son-in-law Henry D. Bacon. In 1849, Page established the express office and banking firm of Page, Bacon and Company in San Francisco, with branches in Sacramento and Sonora, California, and Honolulu, Hawaii. The partners were Page, his son Francis W. Page, Henry D. Bacon, Henry Haight, and David Chambers. In 1855, following financial losses, (including those relating to the firms' backing of the financially troubled Ohio and Mississippi Railroad), the Saint Louis and San Francisco offices were liquidated. Page died in 1869 in Washington, D.C.
Henry Douglas Bacon was born in East Granville, Massachusetts in 1817. In 1835, he moved to Saint Louis, Missouri, where he worked in the dry goods business and the iron trade. He married Julia Ann Page, daughter of Daniel D. Page, in 1844. Bacon became a partner in the banking firm Page and Bacon in 1848, and in 1849 he became a partner in the San Francisco firm of Page, Bacon and Company. After the firms were liquidated in 1855, Bacon attempted to settle with creditors and to revive the Ohio and Mississippi Railroad venture, and became engaged in mining, ranching, and other business activities. He moved to the San Francisco area from Saint Louis in 1866, and died in 1893.