Art catalogs and art books are perfect for presenting and marketing an art collection, especially for those who are at the initial stages of recognition as an artist. A few years ago, an art catalog was only for the well established artist.
Today, with the increasing number of self-publishing services, any artist can easily create their own art book or catalog at home on their computer.
Art books and catalogs help to promote art without the artist having to say a word. Just hand it over to an interested person, and let it do the marketing work for you. Art catalogs also function as a documentation of art. Years from now, it can serve as a written and visual record of a body of work, especially if certain artworks are lost or destroyed.