Judy Keen (Keen, Judy)

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  Changing My Mind
  by Judy Keen
  Softcover, Cumquatmay, ISBN 0958178224 (0-9581782-2-4)
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  Changing My Mind: Teacher's Resource Book
  by Judy Keen, Don Black, Petra Hanzak
  Hardcover, Cumquatmay, ISBN 0958178216 (0-9581782-1-6)
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  The Time Riders Code: Teachers Booklet
  by Judy Keen
  Softcover, Cumquatmay, ISBN 0958178232 (0-9581782-3-2)
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  The Time Riders' Code
  by Judy Keen
  Softcover, Cumquatmay, ISBN 0958178208 (0-9581782-0-8)