Double-tow formation flew in pairs of pairs (two tugs and four gliders)
C-47 Skytrains (Dakotas) towing Waco CG-4 gliders
This is color footage, recently discovered in the Library of Congress. This is a clip that includes footage not long after take-off. The double-tow formation flew in pairs of pairs (two tugs and four gliders), echeloned to the right at 10-minute head-to-head intervals between serials of 36 tugs, and 12 minutes between serials of 40 tugs.