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- Brunvand, Jan Harold, The Baby Train, New York, New York: W.W. Norton & Company, Inc., 1993 ISBN 0-393-03438-0
- Clark, Jerome, Unexplained!, Detroit, Michigan: Visible Ink Press, 1993 ISBN 0-8103-9436-7
- Coleman, Loren, Mysterious America, Winchester, Mass.: Faber & Faber, Inc., 1983 ISBN 0-571-12524-7
- Cohen, Daniel, The Encyclopedia of Monsters, New York: Avon Books, 1982 ISBN 0-380-71485-X
- Huyghe, Patrick, The Field Guide to Extraterrestrials, New York: Avon Books, 1996 ISBN 0-380-78128-X
- Keel, John A., The Mothman Prophecies, Avondale Estates, Georgia: IllumiNet Press 1991 ISBN 0-9626534-3-8
- Keel, John A., The Complete Guide To Mysterious Beings, New York: Bantam Doubleday Dell Publishing Group, 1994 ISBN 0-385-47094-0