Jack Tar in history : essays in the history of maritime life and labour / edited by Colin Howell and Richard J. Twomey.  Fredericton, N.B. : Acadiensis Press, 1991. 275 pages : illustrations ; 23 cm.

Ground zero : a reassessment of the 1917 explosion in Halifax harbour / co-edited by Alan Ruffman and Colin D. Howell.  Halifax : Nimbus ; Gorsebrook Research Institute for Atlantic Canada Studies at Saint Mary's University, 1994. viii, 484 pages : illustrations, maps ; 24 cm.