Magazine published by Pagan Publishing covering the Call of Cthulhu RPG.
Issues 1-8/9 were roughly 8.5" tall, 7" wide.
Issues 10-current are 8.5" x 11" letter size.
Issues 1 - 4 had a particularly low number of copies printed. The author subsequently re-released most of the content from these issues as free text files called The Annotated Unspeakable Oath issues 1-4.