You can order my books from many sources.  Look below to see which is best for you.

e77mon Storefront on Amazon - a few books available directly from me.

http://www.amazon.com/shops/e77mon

Amazon.com

http://www.amazon.com/exec/obidos/search-handle-url/ref=ntt_athr_dp_sr_1?%5Fencoding=UTF8&search-type=ss&index=books&field-author=Montroll%20John

Origami USA - The Source

http://www.origami-usa.org/thesource/agora.cgi

Nicolas Terry - France and Europe

http://www.origami-shop.com/montroll-john-m-31.html

Israeli Origami Center - Paul Jackson and Miri Golan

http://www.origami.co.il/origami/Main_E.html

Dover Publications

http://search.store.yahoo.net/cgi-bin/nsearch?catalog=doverpublications&query=montroll

AK Peters - “Origami Polyhedra Design” publisher

http://www.akpeters.com/product.asp?ProdCode=4582

Origami Bolivia

http://www.origamibolivia.com/index.php?pg=5&im=5&sc=no