Compiled References on the 'Hollow Earth' Theory

This document is a comprehensive bibliography titled 'Compiled References on the Hollow Earth Theory,' authored by Ignacio Darnaude Rojas-Marcos and dated May 1983. The document serves as a reference guide for literature, books, and articles concerning the theory that the Earth is hollow. The bibliography lists a wide array of publications, including works by authors such as Raymond W. Bernard, Timothy G. Beckley, Dr. M. Doreal, and Ray Palmer. The entries span various decades, with some dating back to the late 19th century. The document also includes a specific section titled 'Alleged Beings Living Underworld Below the Surface of the Earth,' which lists 'Seance Memoranda' communications received through the medium Mark Probert and edited by the Borderland Foundation. These memoranda detail specific trance lectures and communications from various entities, including 'Lao-Tse,' 'Lo Sun Yat,' 'E.Yada di Shi'ite,' 'Professor Alfred Luntz,' 'Maharajah Natcha,' and 'Professor Harry La Verne Twining,' spanning the years 1947 to 1952. The bibliography covers international sources, including publications from Spain, Argentina, Italy, France, and the United Kingdom, alongside numerous American publishers specializing in esoteric and fringe topics. The document provides a structured list of titles, often including publication details such as publisher, year, and occasionally price or page count, intended to assist researchers in locating materials related to the Hollow Earth hypothesis.