BB SIGHTINGS - 1950 - BY MONTH
NARA-PBB1-34 - January - February Sightings
NARA-PBB1-35 - March Sightings
NARA-PBB1-36 - April, May, June Sightings
NARA-PBB1-37 - July & August Sightings
NARA-PBB1-38 - September - October Sightings
NARA-PBB1-39 - November & December Sightings