Purpose of the flight and payload description
The reference for this flight came from two old 4" x 5" acetate negative of balloons carrying cosmic ray detection equipment being released at the University of Chicago campus on October 9, 1948. According to the caption, it was expected to collect data on the meteor shower that was to occur that same night.
Details of the balloon flight
Balloon launched on: 10/9/1948
Launch site: Stagg Field, University of Chicago, Illinois, US
Balloon launched by: Chicago University Group
Balloon manufacturer/size/composition: Balloon Tandem