Phi Lambda Upsilon was founded as an honorary chemical society in March 1899, at the University of Illinois. This was the first honor society dedicated to a single scientific discipline. A survey of our history reveals three distinct periods. Founding, growth and entrenchment of Alpha Chapter at the University of Illinois comprise the first period. The second period began in 1906 when Beta Chapter was established at the University of Wisconsin. Five more chapters were chartered prior to 29 June 1911, the date of the convention at Indianapolis at which the national society was organized and the second period reached its culmination. Since 1911 to date, the Society has affected a gradual rise in the standards for membership. This period has also been characterized by the development of programs of activity within the chapters consistent with the honorary character of the Society. In the span of ninety-five years, Phi Lambda Upsilon has grown into an organization comprising sixty-seven chapters and more than 55,000 members.

National Constitution (1 February 2003)

National By-Laws (1 February 2003)