Randy, the bulk of my Zeenut collection can be seen on my website:
http://www.starsofthediamond.com/zeenuts.html
-You are always free to use any pictures you need for any research you are doing but would appreciate a heads up if you ever publish anything using the pics (I can also get you much higher res scans as well if you let me know in advance).
-I mainly collect the Zeenuts up to about 1925 or so at the present time (I've never really tried for the later sets, but I'm sure I will in time).
-Rhett