Cal. Civ. Proc. Code § 1531
(a) Within one year after payment or delivery of escheated property as required by Section 1532, the Controller shall cause a notice to be published in a manner that the Controller determines to be reasonable, which may include, but not be limited to, newspapers, Internet Web sites, radio, television, or other media. In carrying out this duty, the Controller shall not use any of the following:
(c) The mailed notice shall contain all of the following: