3Mi NWof Concord unidentified aerial event — August 20, 1960

Went straight up and then disappeared, about 3 to 5 seconds duration. A SH&FF C0L9R, STACLIGHT, WHITE WITH RED AND WRITE LIGHTS* MOVING STRAIGHT AND HOVERING • OBSERVED FOR ABOUT 2® MINUTES. A FLIGHT FIRST SIGHTED 3Y PAPER DELIVERY 3CY AND CRTIFTXON UFO WAS ABOUT 50 FEET ELEVATION. VERY BRIGHT AND CLEAR LIGHT CONDITION, OBSERVED FOR ABOUT 5 MINUTES. OBJECT WAS OBSERVED ABOUT THIS MINUTE. NO AIR TRAFFIC REPORTED. NO ACTIVITY REPORTED AT AIRFIELD WITHIN ONE HALF MILE. SIGHTED DIRECTLY OVER CONCORD, CALIF.