In one of the piles of junk from a lab cleanout I found a Tektronix “2440 Digital Storage Oscilloscope Operators” manual, PN 070-6599-00, Product Group 37.
It’s in good condition.
It’s the December 1988 revision.
What makes it “good condition” instead of “excellent condition” is that the back cover has a few tears around the punched holes for the comb binding, and the cover has a little wear that has exposed the white paper under the blue color. The interior pages are in like-new condition.
I’m asking $20 plus media mail postage.