from Fancyclopedia 2 ca. 1959
Pename of Juanita Coulson for some of her art work in the Share sisters' fanzines ("kabu" is Japanese for "share"). Mostly fubsy wenches, these.

from Fancyclopedia 2 Supplement ca. 1960:
It wasn't Juanita Coulson who used this nom de plume; she firmly denies it. It was actually Nancy Share, who explains that when she told me it "wasn't" her, what she really mean was that "Kabu" was a name she'd invented for an imaginary personality of hers who "lived" in an imagined orient. Drat such people.