Two copies of a typed manuscript titled, "Counting algorithms for connected labelled graphs" by Donald Cowan, R.C. Mullin, and Ralph G. Stanton. The manuscript is twelve pages. This paper was presented at the sixth Southeastern Conference on Combinatorics, Graph Theory, and Computing held at Florida Atlantic University in Boca Raton, Florida between February 17-20, 1975. This paper was subsequently published in the Proceedings of the sixth Southeastern Conference on Combinatorics, Graph Theory, and Computing, pages 219-231. Also includes correspondence related to the submission of the paper to the conference.

A sound recording of an interview conducted by Dr. Anne Millar with Don Cowan, Distinguished Professor Emeritus in the Cheriton School of Computer Science at the University of Waterloo, for the Oral History Hub pilot project. The interview includes discussions about Cowan's family background, their decision to come to Waterloo and the path that brought them here, as well as their thoughts about the institution and where it will be at 100 years old, in 2057. Additional topics include computer science, IBM, Computer Science Days, math contests, WATFOR, WATFIV, MicroWAT, Centre for Education in Mathematics and Computing, intellectual property, startups, co-op, Wes Graham, Ralph Stanton, Doug Wright, Ken Fryer, Paul Dirksen, Paul Cress, and Pat Fisher. The interview was conducted virtually from Waterloo, Ontario. File also contains a transcript of the interview.