Four volumes in the series 'Pyramidology' all originally published between 1957 and 1972. All have blue cloth hard covers with gilt titles on the fronts and spines. In this collection, Book I is fourth edition 1970, Book II appears to be first edition 1962, Book III appears to be first edition 1966 and Book IV is first edition 1972. Book I is clean and tight but has an owner name and address stamp on the front pastedown, and on pages 33, 46 and 47 there is a small amount of yellow highlighting. Book II is a little bumped at the top of the spine, has an old sellotape mark on the front pastedown and a small gift inscription on the first free endpaper. Book III is dedicated and signed by the author on the front pastedown, dated 1974. Book IV has the rubber stamped name and address on the front pastedown. Apart from the highlighting on three pages of book I the remainder of the text is clean and unmarked. A very sound and scarce set. The author was the founder of the Institute of Pyramidology; these four large volumes were devoted to establishing a link between the measurements of the pyramids of Egypt and theories about the Bible and the Lost Tribes of Israel. Rutherford belonged to a sect known as the British Israelites, whose origins went back to the 17th century. Revived in 1864, the theory was that the West European races, and the British in particular, are descendants of the ten tribes of Israel exiled by the Assyrians.