W. Clauson-Thue

1834 – 1907

• The A 1 universal commercial electric telegraphic code
• The A B C universal commercial electric telegraphic code, specially adapted for the use of financiers, merchants, shipowners, underwriters, engineers, brokers, agents, &c., suitable for every one
• The A.B.C. universal commercial electric telegraphic code, specially adapted for the use of financiers, merchants, shipowners, brokers, agents, &c
• The A1 universal commercial electric telegraphic code, especially adapted for the use of financiers, merchants, shipowners, underwriters, engineers, brokers, agents, &c. ...
• The ABC universal commercial electric telegraphic code specially adapted for the use of financiers, merchants, shipowners, etc