Guest Editors
from Fancyclopedia 2 ca. 1959
are invited to put out an issue of an Old Established Fanzine by its regular eds. Imagination! had Charles Hornig of WS for Issue #6 or #7. Redd Boggs, running across records of this, revived the idea, and one issue of his Sky Hook and two of Art Rapp's Spacewarp were guest-edited by Burbee & Laney.

from Fancyclopedia 2 Supplement ca. 1960:
The cited issues of Sky Hook were actually not guest edited by the Insurgents, though they did take them over pretty thoroughly.