Damaged railway tracks, Zhabei, Shanghai, 1932
Radio aerial made by Jack Ephgrave, Shanghai
Phil Blown with amateur (ham) radio equipment, Shanghai
American Marines with signal equipment and semaphore flags on a rooftop lookout, Shanghai
Fires burning, Shanghai North Railway Station signal box, Zhabei, 1937
Japanese marines occupy Shanghai North Railway Station, Zhabei, October 1937
Shanghai North Railway Station, Zhabei, October 1937
Signal Station, Victoria Peak, Hong Kong
Rigging with signal flags, Shanghai
Rigging with signal flags on sailing ship, Shanghai
North China British Volunteers, with signal flags, Peking