Knight Templar Magazine: The Royal Arch and the Pathway to the Search for Lost Knowledge Dr. David Harrison Posted on August 1, 2015 by David HarrisonAugust 12, 2015 Dr. David Harrison continues to delve into the origin of the Royal Arch in an series of articles entitled “The Royal Arch and the Pathway to the Search for Lost Knowledge” for Knights Templar Magazine.Below is the entire series in PDF format.0611 Knights Templar Magazine0711 Knights Templar Magazine0811 Knights Templar Magazine0911 Knights Templar Magazine