Concordia University. Sir George Williams Part-Time Students’ Association of Concordia University

• Sir George Williams University. Evening Faculty Student Society - EFSS (?-1950)
• Sir George Williams University. Evening Undergraduate Society - EUS (1950-1955)
• Sir George Williams University. Evening Students' Association - ESA (1955-1975)

The Sir George Williams Part-Time Students' Association of Concordia University (PTSA) was originally named the Evening Faculty Student Society. The date of its creation is unknown. In 1950, it changed its name to Evening Undergraduate Society (EUS), and with the presentation of a new constitution in 1955, the association again changed its name to Evening Students' Association (ESA). In 1968, the ESA started publishing a newspaper called The Paper, which became The Concordian in May 1973.

In March 1974, because of mismanagement of the ESA, the Sir George Williams University Board of Governors suspended the constitution of the Association. After a short legal battle, the Board of Governors won the right to audit the Association and created a Board of Trustees which managed the Association while it prepared a report on its future. (Sir George Williams University officially merged with Loyola College to form Concordia University in August 1974.) In March 1975 the Board of Trustees published part of its report in The Concordian. They proposed a new constitution and a new name: the Sir George Williams Part-Time Students' Association of Concordia University (PTSA). In April 1975, these were approved by the Board of Governors.

The Board of Trustees stayed in office as the PTSA executive. In October 1975 an attempt to elect a student executive failed. An extension was granted by the Concordia University Board of Governors and the Board of Trustees attempted another election in March 1976; that election was cancelled. In May 1976 the Board of Governors created an advisory committee to administer the PTSA until a student executive could be elected for the 1977-1978 academic year, but after a few attempts at stimulating part-time student interest, the advisory committee decided not to proceed with the election. The PTSA continued to publish the student newspaper The Concordian until February 1976. The advisory committee remained in place until the creation of the Concordia University Students' Association (CUSA) in 1979.

Created 2015-06-05. Revised 2019-04-17