California Code, Public Resources Code - PRC § 4875

In all cases where two or more persons, firms, or corporations are engaged in or intend to engage in putting or placing logs or timber into any navigable water in this state for the purpose of rafting or floating such logs or timber to any place within this state for manufacture or sale and where such logs are to be rafted or floated a distance of one mile or more, such person, firm or corporation may have some mark of his or its selection and authenticated as provided in this chapter impressed in a conspicuous place on the end or surface of each such log or piece of timber.