First Canadian Edition (in correct Knopf issued First American Edition dustjacket). M. dustjacket art. Very scarce Fletcher title and biblio-mystery. "Would anyone commit violent murder for one musty old book? A famous American book collector, his body a mass of battered flesh, was found at the bottom of Harlesden Scar on the lonely Yorkshire moors." As the novel progresses, it becomes clear that Dr. Essenheim was murdered shortly after having purchased a first edition of Pilgrim's Progress and a medieval book of hours, both of which were missing when the body was found. In one of his Saturday Evening Post articles, Dr. Abraham Simon Wolf Rosenbach claimed that Essenheim was based on him, an homage which the mystery-loving Dr. Rosenbach enjoyed. Almost Near Fine, hint of a splash stain to spine, very mild cocking in nearly Very Good dustjacket, dime sized chip at lower spine end and lower front panel, some tiny edge chips, couple square inch sized light stain at mid rear panel, split along rear spine edge (mended at verso with archival tape).