"A Bunyan-stannard First-aid Envelope for Protection against Infection in Burns, as issued to the RAF" image 1: a pilot in a cockpit with the first aid envelope placed over his hand as he holds the fastening taught in his teeth. image 2: a gunner in action, facing the viewer and wearing the first aid envelopes on both hands. image 3: a pilot in profile, in the cockpit, holding the controls while wearing the first aid envelope on his visible hand. image 4: a navigator at work, wearing the first aid envelope on his visible hand.