Instruction for portable anaesthetic breathing apparatus
Folded sheet of card, printed with instructions for use of Drager's portable anaesthetic apparatus, published by Draeger, Berlin, 1917
Part of Dr. Roth Drager's portable anaesthetic apparatus, two canvas bags taken from a captured battleship, by H. Beckmann, Kiel, 1914-1918
Folded sheet of card, printed with instructions for use of Drager's portable anaesthetic apparatus, published by Draeger, Berlin, 1917