Michigan Compiled Laws, Chapter 484. Telephone, Telegraph and Radio § 484.251

Sec. 1. That it shall be the duty of all telegraph companies incorporated either within or without this state, doing business within this state to receive dispatches from and for other telegraph companies' lines, and from and for any individual, and on payment of their usual charges for individuals for transmitting dispatches as established by the rules and regulations of such telegraph companies, to transmit the same with impartiality and good faith. Such telegraph companies shall be liable for any mistakes, errors or delays in the transmission or delivery, or for the non-delivery of any repeated or non-repeated message in damages to the amount which such person or persons may sustain by reason of mistakes, errors or delays in the transmission or delivery due to negligence of such company, or for the non-delivery of any such dispatch, due to negligence of such telegraph company or its agents, to be recovered with costs of suit, by the person or persons sustaining such damage.