Works using the word "psalter," or a cognate, in the title proper or other title information are often reproductions of parts of medieval psalters being published to present the art of the illustrative matter contained in the original psalter. Enter these incomplete psalters under the heading for the artist or under title if the artist is unknown (cf. LCRI 21.11B).

If the content is primarily textual, rather than illustrative, the choice is between texts with a Biblical emphasis and those with a liturgical emphasis. Enter the work under the heading for the church as a liturgical text if it contains any obvious liturgical element (as when one or more of the following are added to the Psalms: canticles, antiphons, liturgical calendar, etc.; cf. 21.39); otherwise, enter under the heading for the Psalms.

See also:

25.18. Parts of Sacred Scripture and Additions