In 1963 an Elementary School in Alpine County California witnesses a flying saucer at 40 feet.

When I was in 1st grade in about 1963 our family lived in Alpine County California, our school was very small about 20 people for 1st through 6th grades.  One day at school during recess our whole school, including my sister and teachers witnessed a flying saucer. This air craft swiftly came from the clouds dropped down to about 40 - 50 feet of the school yard and hovered for about a minute.  We all stood and stared in awe.  It left just as quickly as it came and looked as if it crashed behind a mountain.  One of the teachers called the local sheriff and reported the incident.  He drove the area that this craft could have crashed at and saw nothing unusual. In 1997 my family including my father and sister revisited our old school site.  The school as since burned down.  But my father is a friend of the sheriff that was called that day.  He asked him if he remembered this incident.  He admitted that he didn’t remember that particular incident, but that was because he had been called out on numerous calls involving unidentified flying objects. Besides my sister, we have not spoken with anyone about this incident since it happened.  I guess it was "swept under the rug."  Have you heard of any similar instances in that area? I'd appreciate any updates or information you could give me. Thank you, ((name deleted))
Date is approximate.  PD