In the publication of the laws of this State, the Secretary of State shall cause to be published in each volume a general certificate to the effect that the same as contained in such volume are true copies of the laws of the General Assembly, and executive orders of the Governor which take effect pursuant to Article V, Section 11 of the Constitution and the "Executive Reorganization Implementation Act", as the case may be, on file in his office; and each volume so certified shall be received as evidence in all courts and places.
15 ILCS 305/8