Pinkcoke
Alumni
I was doing more digging, and came across this site with many articles on specific button topics and a good basic button type ID which I found very useful for a novice button person and thought others may also find beneficial:
http://bnb.jewelrymakingmagazines.com/community/button-corner#3_
http://bnb.jewelrymakingmagazines.com/community/button-corner#3_