Best Edition
When two or more editions of the same version of a work have been published,
the one of the highest quality is generally considered to be the best edition.
In judging quality, the Library of Congress will adhere to the criteria set
forth below in all but exceptional circumstances.
The criteria to be applied in determining the best edition are listed below
in descending order of importance. In deciding between two editions, a criterion-by-criterion
comparison should be made.
The edition that first fails to satisfy a criterion is to be considered of
inferior quality and will not be an acceptable deposit. Example: If a comparison
is made between two hardbound editions of a book, one a trade edition printed
on acid-free paper, and the other a specially bound edition printed on average
paper, the former will be the best edition because the type of paper is a more
important criterion than the binding.
- Paper, Binding, and Packaging:
- Archival-quality rather than less-permanent paper
- Hard cover rather than soft cover
- Library binding rather than commercial binding
- Trade edition rather than book club edition
- Sewn rather than glue-only binding
- Sewn or glued rather than stapled or spiral-bound
- Stapled rather than spiral-bound or plastic-bound
- Bound rather than looseleaf, except when future looseleaf insertions
are to be issued. In the case of looseleaf materials, this includes the
submission of all binders and indexes when they are part of the unit as
published and offered for sale or distribution. Additionally, the regular
and timely receipt of all appropriate looseleaf updates, supplements,
and releases including supplemental binders issued to handle these expanded
versions, is part of the requirement to maintain these publications properly
- Slip-cased rather than nonslip-cased
- With protective folders rather than without (for broadsides)
- Rolled rather than folded (for broadsides)
- With protective coatings rather than without (except broadsides, which
should not be coated)
- Rarity:
- Special limited edition having the greatest number of special features
- Other limited edition rather than trade edition
- Special binding rather than trade binding
- Illustrations:
- Illustrated rather than unillustrated
- Illustrations in color rather than black and white
- Special Features:
- With thumb notches or index tabs rather than without
- With aids to use such as overlays and magnifiers rather than without
- Size:
- Larger rather than smaller sizes. (Except that largetype editions for
the partially-sighted are not required in place of editions employing
type of more conventional size.)