Dr. M. David Curtis Studies Map Of UFO Sighting, March 1973 Year 1973 Month March Rights Held By Donated by the Ann Arbor News. © The Ann Arbor News. Copyright Copyright Protected Related UFO Reported Over City Photo Subjects Ann Arbor News Old News University of Michigan - Faculty & Staff University of Michigan - Chemistry Department Unidentified Flying Objects UFOs Maps M. David Curtis Cecil Lockard