Does anyone have any information on Walter Laird's Technique of Latin Dancing the 1972 Edition.

I am under the impression that this edition is extremely rare and holds information regarding steps and arm movements that are not in any other edition of the book ranging from the 1960's to 2003. This book is also known as "The Green Book".

I have been able to find evey other edition of the book readily available online but not this one.

Any information regarding this book would be extremely helpful especially if someone could confirm that it is a rare copy.

Thank you