A concordance to The Prophecies of Nostradamus' 1568 Lyon edition is thoroughly detailed in its presentation. This includes cross-referencing combined form words both under the first letter and under the first letter after the abbreviated word attached. The case is perfectly maintained, with attention given to symbols appearing in the quatrains, most importantly to ampersands, periods, commas, and colons. Additionally, quatrains that have been routinely attributed to Nostradamus are also included in this concordance, which appear in later editions (such as the 1630 reprint) and listed as additions to Centurie VII, Centurie X, Centurie XI and Centurie XII.

In addition to that primary concordance, there is also a concordance to the words making up the two letters within this 1568 Lyon edition, which are the Preface and the Epistle to King Henry II of France. That concordance also pays attention to the symbols contained within that letter.

Further, as all references in the concordance to the letters are listed by letter and page number [ex.: P-5, H-7], reproductions of those pages are presented, as close to the actual publication pages as possible. However, there is no reproduction of the quatrains.