The art gallery presented to the city by Margaret E. Crocker shall always be known as the "E.B. Crocker Art Gallery," and shall be held, maintained and conducted by the city, according to the provisions of the deed presenting said art gallery to the city, executed by Margaret E. Crocker, dated May 2, 1885, and recorded in book 115, page 298, of deeds in the recorder's office of the county of Sacramento, state of California, and the mayor is declared to be the chief executive officer of the city in the sense and for the purpose of the trust created by the above deed; provided, that should the terms and conditions of such tenure ever be altered, the city council should provide means, financial and administrative, to conduct and maintain the same in accord with such altered tenure. (Prior code § 60.07.040)