Second Stage Lensmen by E.E. Smith

When the forces of the Galactic Patrol blasted Helmuth's Grand Base out of existence and hunted down and destroyed his secondary bases throughout this galaxy, Boskone's military grasp upon Civilization was definitely broken. Some minor bases may have escaped destruction, of course. Indeed, it is practically certain that some of them did so, for there are comparatively large volumes of our Island Universe which have not been mapped, even yet, by the planetographers of the Patrol. It is equally certain, however, that they were relatively few and of no real importance. For warships, being large, cannot be carried around or concealed in a vest pocket -- a war fleet must of necessity be based upon a celestial object not smaller than a very large asteroid. Such a base, lying close enough to any one of Civilization's planets to be of any use, could not be hidden successfully from the detectors of the Patrol.

Reasoning from analogy, Kinnison quite justifiably concluded that the back of the drug syndicate had been broken in similar fashion when he had worked upward through Bominger and Strongheart and Crowninshield and Jalte to the dread council of Boskone itself. He was, however, wrong.