Promise of Love By Renault, Mary Books / Paperback Special Collections / Author Archives › Barbara Mertz Collection Publisher: Pyramid, January 1972 Price $19.77 Free Shipping Send to a friend Collectible - Good Collectible - Good. This book formed part of Barbara G. Mertz's personal library at her home in Frederick, Maryland. Barbara G. Mertz Rev Trust custom bookplate inside front cover. Barbara Mertz's signature on front endpage. (Romance, Fiction) $19.77 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.