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Manual of Traffic Signs     View
Illustrations of the most commonly used traffic signs in the United States. The signs are grouped by type (e.g., Regulatory, Warning, Informational, Recreational, Construction, Emergency Management). Includes information about standard shapes and col ...

Dan's Wigwag Site     View
A site dedicated to wigwag crossing signals, installed at many train crossings in the early twentieth century. Includes information about surviving wigwags, wigwag displays, sources for parts, instructions for subscribing to the Wigwag_Fan discussion ...

Mystic Seaport: The Museum of America and the Sea     View
This Connecticut museum (founded in 1929) allows visitors to "climb aboard historic tall ships, stroll through a re-created 19th-century coastal village or watch a working preservation shipyard in action." Its website features background ab ...

International Marine Signal Flags     View
Descriptions and images of the alphabet flags and pennants used for communication by ships at sea. Also links to a page explaining the semaphore flag signaling system, with images of all the letters in the semaphore alphabet.


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