"The Massorah is an encyclopedic work siting all various readings of the Tanach from different manuscripts through out the world. In the first four volumes, the original text of the masorah (in Hebrew) is arranged alphabetically with many additional notes drawn from manuscripts. The fifth volume contains supplements, and some masoretic tractates. The sixth volume renders into English all Hebrew entries of the first volume up to the letter "yod," with explanatory notes. Christian David Ginsburg himself was a Jewish apostate who originally learned in the Yeshivas of Poland but later converted to Christianity (thus adopting the name Christian) and moved to England. Inspite of his personal status his works are still cited and used by many present day talmidei chachamim and serve as an invaluable work towards preserving the massorah of the correct text of Tanach." Seforim Online offers the original 4 vols. in the 6 vols. edition; Google and Microsoft and others have some or all the volumes. Here is all the set with additional works related to it. May it live on. mjm,2009.