Unexplained phenomena


 * See also: List of unsolved problems in physics

Books published by include:
 * Mysteries of the Universe (1967)
 * Mysteries Beneath the Sea (1970)
 * Strange Phenomena: A Sourcebook of Unusual Natural Phenomena (1974)
 * Strange Artifacts: A Sourcebook on Ancient Man (1974)
 * The Unexplained (1976)
 * Strange Life (1976)
 * Strange Minds (1976)
 * Strange Universe (1977)
 * Handbook of Unusual Natural Phenomena (1977)
 * Strange Planet (1978)
 * Ancient Man: A Handbook of Puzzling Artifacts (1978)
 * Mysterious Universe: A Handbook of Astronomical Anomalies (1979)
 * Unknown Earth: A Handbook of Geological Enigmas (1980)
 * Incredible Life: A Handbook of Biological Mysteries (1981)
 * The Unfathomed Mind: A Handbook of Unusual Mental Phenomena (1982)
 * Lightning, Auroras, Nocturnal Lights, and Related Luminous Phenomena (1982)
 * Tornados, Dark Days, Anomalous Precipitation, and Related Weather Phenomena (1983)
 * Earthquakes, Tides, Unidentified Sounds, and Related Phenomena (1983)
 * Rare Halos, Mirages, Anomalous Rainbows, and Related Electromagnetic Phenomena (1984)
 * The Moon and the Planets (1985)
 * The Sun and Solar System Debris (1986)
 * Stars, Galaxies, Cosmos (1987)
 * Carolina Bays, Mima Mounds, Submarine Canyons (1988)
 * Anomalies in Geology: Physical, Chemical, Biological (1989)
 * Neglected Geological Anomalies (1990)
 * Inner Earth: A Search for Anomalies (1991)
 * Biological Anomalies: Humans I (1992)
 * Biological Anomalies: Humans II (1993)
 * Biological Anomalies: Humans III (1994)
 * Science Frontiers: Some Anomalies and Curiosities of Nature (1994)
 * Biological Anomalies: Mammals I (1995)
 * Biological Anomalies: Mammals II (1996)
 * Biological Anomalies: Birds (1998)
 * Ancient Infrastructure: Remarkable Roads, Mines, Walls, Mounds, Stone Circles: A Catalog of Archeological Anomalies (1999)
 * Ancient Structures: Remarkable Pyramids, Forts, Towers, Stone Chambers, Cities, Complexes: A Catalog of Archeological Anomalies (2001)
 * Remarkable Luminous Phenomena in Nature: A Catalog of Geophysical Anomalies (2001)
 * Scientific Anomalies and other Provocative Phenomena (2003)
 * Archeological Anomalies: Small Artifacts (2003)
 * Archeological Anomalies: Graphic Artifacts I (2005)