The Crocker is excellent; so is the one described in the Library Bureau catalog.
[Illustration: L.B.book supports.

(Reduced.)] Books as they come from the dealer are not always perfect.

To make sure that their purchases are in good condition some libraries collate all their books as soon as received, that is, look them through with care for missing pages, and injuries of any kind.

Imperfect volumes are returned.

But save with very expensive books this labor is unnecessary, and doesn't pay.