Mo. Rev. Stat. § 11.010: Official manual.

The official manual, commonly known as the "Blue Book", compiled and electronically published by the secretary of state on its official website is the official manual of this state, and it is unlawful for any officer or employee of this state except the secretary of state or a designated employee of the secretary of state, or any board, or department or any officer or employee thereof, to cause to be printed, at state expense, any duplication or rearrangement of any part of the manual. It is also unlawful for the secretary of state to publish, or permit to be published in the manual any duplication, or rearrangement of any part of any report, or other document, required to be printed at the expense of the state which has been submitted to and rejected by him or her as not suitable for publication in the manual.