The University of Iowa Library identified the smallest book in their collection as a 4mm X 4mm tiny book published by Toppan Printing Company. This tiny book was recently discovered to be a section of the Bible published to coincide with the New York World’s Fair in 1965. Although no current value has been established for this ultra micro-miniature tome, the library says it has no interest in selling their tiny treasure.
http://lj.libraryjournal.com/2013/08/academic-libraries/university-of-iowa-library-ids-tiny-tome/#_
Hi, I found your webpage when searching for some information. I also have a tiny micro book by Toppan of the Lincoln Gettysburg Address set in a box with an instruction book from 1965. I can send you some pictures if you would like to see it?
Best wishes
Genieve