W. D. St. Clair (c.1834-1899) was born in Ireland and died in Chicago, Illinois. He emigrated to the United States in 1862 and embarked on a successful and profitable career as an advertising solicitor. His career began at the Chicago Evening Journal and he later secured a contract as advertising solicitor for the Chicago Times, a position he held until 1887. After leaving the Times, he retired to Happy Woods near Hammond, Louisiana.

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