Part I lists all the original publishers for the White Circle Pocket Edition (1942-1952) mass market paperback imprint of the Toronto based subsidiary of Scottish/British publisher Wm. Collins. There are 28 publishers with one title.
- Sunshine Sketches of a Little Town by Stephen Leacock first published in 1912 (London: John Lane)
- Treasure Island by Robert Louis Stevenson in 1883 (London: Cassell)
- Black Jade by Angeline Taylor in 1947 (New York: Robert M. McBride)
- Without Armour by James Hilton in 1933 (London: Ernest Benn)
- Turvey by Earle Birney in 1949 (Toronto: McClelland & Stewart)