Wyo. Stat. § 34-5-115
No such gift, bequest or devise contained in any will executed in accordance with the requirements of law shall be deemed invalid by reason of the incorporation by reference in the will of any written or printed resolution, declaration or trust agreement, identified as existing prior to the execution of such will, and adopted or made by any corporation or corporations authorized by law to accept and execute trusts, creating a trust to assist, encourage and promote the well being or well doing of mankind, or of the inhabitants of any community, provided that a copy of such resolution, declaration or deed of trust, certified by the secretary or assistant secretary, or other officer or officers, of such corporation or corporations under its or their corporate seal or seals, shall have been filed for record in the office of the secretary of state of the state of Wyoming, the secretary of state being hereby authorized and directed to receive and record such resolution, declaration or deed of trust, upon payment of the fees provided by law.
W.S. 34-5-115