To watch closely.
1877. The detectives followed two men whom they had been shadowing, from Prince Street to the office of the American Express Company.—N.Y. Tribune, Jan. 4 (Bartlett).
1888. A man calling himself Dr. Adams has been shadowed by Boston detectives.—Boston Globe, Feb. 6 (Farmer).
1910. The questions showed that Moe had been carefully shadowed since Tuesday. [Allds bribery case.]—N.Y. Evening Post, Feb. 10.
