30Mi SOf Puerto Rico unidentified aerial event — April 1959

It is believed that this object was a partially observed aircraft whose altitude and speed could not be accurately determined. OBJECT WAS REPORTED TO BE TRAVELING FROM NORTH TO SOUTH. High in the south the evenings is Leo, with its bright star Regulus marking the head and shoulder, making a smaller group which is a little to the left of the Sickle figure, or the head of the Lion.