PLS (Poculi Ludique Societas) sponsors productions of early plays, from the beginnings of medieval drama to as late as the middle of the seventeenth century. The group had its origins in 1964-65 in a seminar on medieval drama conducted at the University of Toronto. For more than forty years, PLS has been associated with the university’s Centre For Medieval Studies, offering a regular schedule of plays every year and now is part of the Centre for Performance Studies in Early Theatre. PLS has toured in Canada, the United States and Europe. PLS also collaborates with the theatre history research project Records of Early English Drama (REED) at the University of Toronto.