The Chieftain's Hatch: Signal Flags, History

The development of a tank was faster than the communication tech that supported it.

Visual Signalling

Unraveling the Meanings of Maritime Flags

Flying Colors - South Street Seaport Museum

The Chieftain's Hatch: T-50, History

Inside the Chieftain's Hatch: Light Tank T1E2

History of Dutchess County 1609 to 1876 by D C H S

Utah Centennial County History Series - Uintah County 1996 by Utah Historical Society - Issuu

Royal Signals - Signalling Flags.

The Chieftain's Hatch: Tanks in Cities, Part I, History

Royal Signals - Signalling Flags.