For your consideration, here is the Tricks with Triads Book by Don Fornuto, Edited by Robert Pace, Set 1, Haromonic Varaiations with Diatonic Triads, copyright 1970, from Lee Roberts Music Publications, 23 pages.  It has some wear on the covers.  It will be mailed in a box for protection.  Item pictured is the actual item up for sale and comes from a non-smoking household.  (592.252x-1.8hc)