Steiner Systems and Room Squares

In 1968, O'Shaugnessy gave a construction for Room squares in terms of Steiner triple systems. Since then, various authors have developed this theme and its generalizations. It is interesting to note that in 1863 Cayley had also established a relationship between Steiner triple systems and Room squares which is different from that of O'Shaugnessy. This paper surveys various results connected with the above.