Balloon: Reefing collar test (964, 964C), 1969-12

(964) Palestine balloon facility, National Scientific Balloon Facility [NSBF], reefing collar test, three packets: 1) frames 1-125, 2) frames 126-268, 3) frames 1-42, 35mm sequence, December 10, 1969, photographed by Charles Semmer and B.W., used in Science Balloon Facility, No. 13, Annual Report, 1970; (964C) Palestine, NSBF, reefing collar test, includes New Hampshire University flight, December 10, 1969, two packets: 1) frames 1-36, 35mm, 2) frames 1-43.