The cover used in this ebook was created by the transcriber and placed in the public domain.
THE
THIRTEENTH LETTER
By NATALIE SUMNER LINCOLN
Author of
“The Cat’s Paw,” “The Meredith Mystery,” “The Red
Seal,” “The Unseen Ear,” etc.
A. L. BURT COMPANY
Publishers New York
Published by arrangement with D. Appleton & Company
Printed in U. S. A.
COPYRIGHT, 1924, BY
D. APPLETON AND COMPANY