This is the landmark work by Janet Travell, M.D. and David G Simons, M.D.
Around WWII, the late Dr. Janet Travell, Professor of Cardiology and Pharmacology, noticed that many presenting cases of angina were unaccompanied by any sign of heart problems. They were, in fact, spasms of the pectoral muscles of the chest. Dr. Travell's observations of muscle spasm and pain led to a whole new field (and incidentally, service as White House physician to Presidents Kennedy and Johnson).
Myfascial Pain and Dysfunction (a.k.a The Red Books) are now the bible of bodyworkers everywhere.
Volume I details upper body including abdominal and back pain; Volume II details lower body.
These volumes are famous for their exquisite illustrations and the detailed (and sometimes groundbreaking) anatomy reported for the first time in this work.
There are both new and used copies available at