This World Wide Web page written by
Dan Styer,
Oberlin College Department of Physics and Astronomy;
http://www.oberlin.edu/physics/dstyer/TeachQM/QMPrimer/;
last updated 15 December 2022.
Technical note: To access the links you must first download the free Adobe Acrobat Reader or Open Standard software.
It was published by the International Textbook Company of Scranton, Pennsylvania, in 1970, under the Copyright Act of 1909, so the copyright expired in 1998. Hence I may legally post the book here for free download.
Covers, Forward, Teacher's Preface, Contents
Chapter 4: The Theory of Quantum Mechanics (sections 4-1 to 4-4)
Chapter 4: The Theory of Quantum Mechanics (sections 4-5 to 4-6), plus Index