13 hand cancelers were prepared for use at the Jamboree.  They are identified by the lowercase, single letter in the bottom half of the cancel, "a" - "m".  The list of cancelers, arranged by increasing frequency of occurrence, is "g", "f", "c", "e", "i", "h", "a", "l", "k", "d", "b", "j" and "m".  This is the only known example of the use of the "g" cancel.