This series contains books written by, for, about or relating closely to the Grail. The books contained in the miscellaneous section were not written, nor published by the Grail, but were used by the Grail either for general information or training purposes. The books are in French, Spanish, Portuguese, German, Dutch and English.

The material is grouped by the following author / publishing units: van Ginneken, International Secretariate, other countries, U.S. (Grailville and regional) and miscellaneous within each of the above author / publishing units. The books are arranged alphabetically by author and within each author, alphabetically by title.