Mr. Kelsey’s efforts are an interesting exploration into the threes phenomena as elucidating the need for adopting a comprehensive and comprehensible program-in-development criteria, the many facets of which are in the making. His amazing work is at http://www.triplicity.org.
Herb O Buckand has an enormous interest in the structure of threes and has been collecting and examining these concepts for years. He has an exciting website for his Threseology Research Journal located at http://www.threesology.org. Here he delves into concepts in threes in many different areas. He is a true generalist.