MacLane, Saunders2011-11-082011-11-081963-10MacLane, Saunders. "Natural Associativity and Commutativity." <i>Rice Institute Pamphlet - Rice University Studies,</i> 49, no. 4 (1963) Rice University: <a href="https://hdl.handle.net/1911/62865">https://hdl.handle.net/1911/62865</a>.article_RIP494_part3https://hdl.handle.net/1911/62865Paper presented in three lectures in Anderson Hall on September 23, 24, 26, 1963engAll rights reserved by Rice University. This work is licensed under a Creative Commons Attribution Non-commercial 4.0 License.Permission to examine physical and digital collection items does not imply permission for publication. Fondren Library’s Woodson Research Center / Special Collections has made these materials available for use in research, teaching, and private study. Any uses beyond the spirit of Fair Use require permission from owners of rights, heir(s) or assigns. See http://library.rice.edu/guides/publishing-wrc-materialsarticle_RIP494_part3articles