YUKON
1924-33: Irwin-Hodson (U.S.)
1934, 1936: ? (Probably Hewitt)
1935, 1937-57: Hewitt
1958-77: British Columbia Prison
1978-90: Western Tools
1991-2001, 2007-13: Astrographic
2001-06: Hi-Signs
2014-on: Waldale