According to the article linked to above, the Library of Congress has a huge amount of materials missing - not necessarily stolen or lost but simply misplaced.
Investigators for the congressional library have told lawmakers on a House oversight committee that its review of the retrieval system for the general collection concluded that a 17 percent of materials requested could not be found.
"A subsequent review found 4 percent were either on nearby shelves, checked out to the public or marked with the wrong call numbers. But it remains deeply troubling that nearly 13 percent are unaccounted for by library officials," said Howard Gantman, staff director of the joint congressional committee on the library.
This article provides great insight into library management (in the physical sense, not the personnel sense) and I'd recommend that any library lovers out there give it a read.
