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5 A B C D E F G H I J K L M N O P Q R S T U V W Y Z
Ha Hb Hc He Hi Hm Ho Hr Hs Ht Hu Hw Hy
Hi- Hie Hig Hip His

HIGHBALL

by Metro Digital Resources Librarian • April 14, 2016

Proceed signal, named from the earliest signals which consisted of balls raised or lowered on masts, the raised ball was an indication to proceed.

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