Massachusetts Constitution Pt. 2, Ch. II, § 1, Art. 12

ART. XII. All public boards, [the commissary-general,] all superintending officers of public magazines and stores, belonging to this commonwealth, and all commanding officers of forts and garrisons within the same, shall once in every three months, officially, and without requisition, and at other times, when required by the governor, deliver to him an account of all goods, stores, provisions, ammunition, cannon with their appendages, and small arms with their accoutrements, and of all other public property whatever under their care respectively; distinguishing the quantity, number, quality and kind of each, as particularly as may be; together with the condition of such forts and garrisons and the said commanding officer shall exhibit to the governor, when required by him, true and exact plans of such forts, and of the land and sea or harbor or harbors adjacent.

And the said boards, and all public officers, shall communicate to the governor, as soon as may be after receiving the same, all letters, despatches, and intelligences of a public nature, which shall be directed to them respectively.