Conversation so far:
What kind of social work did Harry Hopkins do?
In 1915, New York City Mayor John Purroy Mitchel appointed Harry Hopkins executive secretary of the Bureau of Child Welfare which administered pensions to mothers with dependent children.
Were there other jobs for Harry Hopkins aside from being secretary of the Bureau of Child Welfare?
Harry Hopkins moved to New Orleans in 1917, where he worked for the American Red Cross as director of Civilian Relief, Gulf Division.
What did working for the Red Cross in New Orleans do for Harry Hopkin's career?
Eventually, the Gulf Division of the Red Cross merged with the Southwestern Division and Harry Hopkins, headquartered now in Atlanta, was appointed general manager in 1921.

Question: How long did he work there?
Self-contained rewrite: How long did Harry Hopkins work in Atlanta?