"Brochure I. Babyuk is designed for young aircraft modellers. Detailed drawings and descriptions of the work process allow the young reader to easily design and build air postmen for box kites. Air postmen - devices for lifting a snake of various cargoes on the rail - can drop cargo at the required height, take photographs, etc., and return back. They can serve for propaganda purposes in involving children in the ranks of young aircraft manufacturers, for scattering newspapers and leaflets, dropping target gliders for practical shooting at targets moving in the air, etc."