An appeal to the public / by William Vans, native citizen of Massachusetts, against the slanders circulated by Stephen Codman, executor of the wills of John and Richard Codman, and their heirs, Mrs. Catherine Codman, widow, Rev. John Codman, of Dorchester, and Charles R. Codman, of Boston, who have defrauded Vans of 450,000 dollars, this narrative proves.