Publishing History

This is a chart to show the publishing history of editions of works about this subject. Along the X axis is time, and on the y axis is the count of editions published. Click here to skip the chart.  This graph charts editions published on this subject.
Editions Published
Year of Publication


Prolific Authors

who have written the most books on this subject
Jacques Vallee, 19 books
J. J. Benítez, 18 books
Jenny Randles, 17 books
Kevin D. Randle, 12 books
Antonio Ribera, 12 books
Jerome Clark, 11 books
Isaac Asimov, 9 books
Brad Steiger, 9 books
Daniel Cohen, 8 books
Raymond E. Fowler, 7 books
John Spencer, 7 books
Le Poer Trench, Brinsley Lord Clancarty, 6 books
Hilary Evans, 6 books
John A. Keel, 6 books
DELETE, 6 books
Philip J. Klass, 6 books
Timothy Good, 6 books
Ronald Story, 5 books
Peter Brookesmith, 5 books
Whitley Strieber, 5 books
Pat Delgado, 5 books
Jenny Randles, 5 books
Ed Walters, 5 books
William J. Birnes, 4 books
Donald Howard Menzel, 4 books


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