There is one manuscript which differs so much from all the others in its form and in its contents as to afford the strongest internal evidence that it is derived from a source entirely different from that which gave origin to the other and later documents.The Halliwell MS. As this is admitted to be the oldest Masonic document extant, and as some very important conclusions in respect to the early history of the Craft are about to be deduced from it, a detailed account of it will not be deemed unnecessary.This work was first published in 1840 by Mr. James Orchard Halliwell, under the title of “A Poem on the Constitutions of Masonry” from the original manuscript in the King’s Library of the British Museum. Mr. Halliwell, who subsequently adopted the name of Phillips, is not a member of the Brotherhood, and Woodford appropriately remarks that “it is somewhat curious that to Grandidier and Halliwell, both non-Masons, Freemasonry owes the impetus given at separate epochs to the study of its archaeology and history.”Halliwell says that the manuscript formerly belonged to Charles Theyer, a well-known collector of the 17th century. It is undoubtedly the oldest Masonic MS. extant. Messrs. Bond and Egerton of the British Museum consider its date to be about the middle of the 15th century.