New York / London: G. P. Putnam's Sons, 1893. Original dark blue cloth with gilt-decorated spine.
First Edition of this mystery, one of Anna Katharine Green's earlier ones. It starts off:
On the evening of July 13, 1863, two men left their homes, one in Washington and one in Buffalo, under circumstances strangely similar. Each had received a letter in the morning mail, which he had quickly destroyed. Each had given evidence of strong and increasing agitation during the rest of the day...
MARKED "PERSONAL" was issued in wrappers, at fifty cents, or as here in gilt-decorated cloth, at $1.00. This copy is in near-fine condition, with minor rubbing at the extremities. Wright III 4656. Item #11716