Air corps : Lathes - USA Voorschrift, Technical Manual, 1-420 Maintenance and care of pneumatic tires and rubber treads - USA Voorschrift, Technical Manual, 31-200 Tire repair and retread - USA Voorschrift, Technical Manual, 9-1868 Instructions for modulated audio frequency radiosonde observations (Wban Raob Manual) - USA Voorschrift, Technical Manual, 11-2424 band - USA Voorschrift, Basic Field Manual, 28-5 Band - USA War Department Field Manual, FM 12-50