Principles of stereoscopy

"Mr. McKay, a popular writer on many photographic topics, from years of experience tells enough of the theory to give a complete grasp of the principles involved, and then proceeds to furnish detailed directions for each of the steps required to make the most effective stereograms. It is a real textbook, but don't start reading it unless you are willing to be infected with the enthusiasm of the author and to be enticed into new and very fascinating hobby." (from the dust jacket)
The later two revisions of this book are even more complete and up to date. (to the mid-1950's).63 62864246