8vo. Publisher's cloth. FIRST EDITION. SIGNED "R.P. FEYNMAN / CALTECH" ON FLY-LEAF.  AND: BOHM, DAVID. Quantum Theory. New York: Prentice-Hall, Inc., 1951. 8vo. Publisher's cloth. FIRST EDITION. SIGNED "R.P. FEYNMAN", AND WITH EQUATION IN HIS HAND TO FLY-LEAF. 

FEYNMAN'S DESK-TOP QUANTUM MECHANICS TEXTS, EVIDENTLY USED BY HIM TO TEACH WITH UPON ARRIVING AT CALTECH.  Of the two books, it is clear the Feynman relied more heavily on Schiff's text — a detailed note at the end of the preface lays out a draft for a syllabus for a third year course on Physics using the book, beginning "1st Third year: all of Chapt. I to VIII, inclusive except Chap V and ..."  with marking next to the chapters to be used. Text annotations include one correction to an equation, and markings next to various paragraphs such as "YES", "NO", "?", "NOT YET", "OMIT" clearly referring to topics to be taught in the course.