University of Victoria instructor and author of:

Greek And Roman Mechanical Water-Lifting Devices: The History of a Technology. U of Toronto P, 1984.
The Harbours of Caesarea Maritimia, Vol. II: The Finds. Tempus Reparatum, 1994.
The Roman Port and Fishery of Cosa. Princeton UP, 1987.

Co-editor of:

Greek and Roman Technology: A Sourcebook. Routledge, 1998. [John Humphrey and Andrew Sherwood]