'He set up his telegraph code by checking the frequency of each letter in the type of a printer's box'
Samuel Morse
ENGLISH: He set up his telegraph code by checking the frequency of each letter in the type of a printers box
He set up his telegraph code by checking the frequency of each letter in the type of a printer's box
He set up his telegraph code by checking the frequency of each letter in the type of a printer's box
ENGLISH
Samuel Morse
ENGLISH