To identify the richest person of all time from every state, 24/7 Wall St. consulted lists of the wealthiest Americans, both living and historical figures. The sources include Forbes, American Heritage, and books such as “The Wealthy 100: From Benjamin Franklin to Bill Gates-A Ranking of the Richest Americans, Past and Present,” by Michael Klepper. Those on this list who are still alive were ranked on their current net worth, while the deceased were ranked on their net worth at the height of their wealth, adjusted for inflation. Net worth figures on sites such as Forbes and Bloomberg are updated regularly. The figures we used from these two sources are as of Saturday, March 2. When estimates for net worth were not adjusted for inflation, we used the Bureau of Labor Statistics Consumer Price Index inflation adjustment calculator. For those on this list who are no longer living, we used net worth estimates at the end of their lives. For those who are alive, net worth figures are meant to reflect current net worth. In several cases, due to an absence of a clear record, we used business size, personal incomes, and property to determine an estimate. We considered the state where the individuals spent a large amount of their childhood to be be their state of origin. When information about where an individual spent his or her childhood was not available, birthplaces were used. Birth years were obtained from various internet sources and biographies. When only current age was available, both possible birth years were listed.