Library Error

I don’t mind when people make small errors with numbers. It makes me feel less bad about the many such errors I make. Still, it was with some shock that I put in a call slip for JFD 83-5083, The Complete Poems of Andrew Marvell and found, awaiting me upon my return from lunch, JFD 83-5053, The Complete Prophecies of Nostradamus.

Is someone trying to tell me something?