Marked "Personal"

This article is about the detective novel. For the 1970s British television series, see Marked Personal.
First softcover edition published by Putnam (at same time as hardcover)[1]

Marked Personal (1893) is a detective novel by American author Anna Katherine Green.

Synopsis

On the evening of July 13, 1863, two men from Washington and Boston, respectively, leave their homes after showing signs of agitation and distress throughout the day. That morning, each one had received a mysterious letter marked 'personal', which they both quickly destroyed...

References