Since work for former
slaves was almost impossible to find after the Civil War, many prisons in the
South were overcrowded with vagrants. In 1868, Richardson exploited this abundance of labor by striking a deal with
Federal authorities in Mississippi (still under the rule of postwar
Reconstruction), to use
ex-slave prison inmates to work his farms in the
Mississippi-Yazoo Delta. Richardson agreed to provide supervisory guards and to treat the prisoners well by providing food and clothing. The state agreed to pay Richardson $18,000 per year for maintenance, plus the cost of transporting prisoners to and from his delta plantation camps. Richardson used the prison laborers to build
levees, clear trees from swamps, and plow fields. Production of cotton using the
convict lease system allowed Richardson to amass a fortune. He owned country stores, banks, steamboats, railroads, cotton-seed mills, a cotton commission house in New Orleans (Richardson and May), a controlling interest in the South's largest textile plant (
Mississippi Mills) in
Wesson, Mississippi, and dozens of cotton plantations in the states of Arkansas, Louisiana, and Mississippi. Richardson was in partnership with
General Nathan Bedford Forrest in planting cotton on
President's Island, near
Memphis, Tennessee, from 1872 until Forrest's death in 1877. In the mid-1880s, Richardson was one of the largest cotton growers in the world with 25,000 acres (10,000 hectares) in cultivation and became known as the "Cotton King". == Death and legacy ==