How to Grow a Miracle By Springer, Gustave Books / Paperback Special Collections / Author Archives › Barbara Mertz Collection Publisher: Boswell, January 1980 Price $17.99 Free Shipping Send to a friend Used - Good Good condition. Barbara G. Mertz Rev Trust custom bookplate on front cover verso.This book formed part of Barbara G. Mertz's personal collection at her home in Frederick, Maryland. (Gardening, Plants, Flowers) $17.99 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.