a. There shall be an art commission the members of which shall be the mayor, who may appoint a person to represent him and replace such representative at his pleasure, the president of the Metropolitan Museum of Art, the president of the New York Public Library (Astor, Lenox and Tilden foundations), the president of the Brooklyn Museum, one painter, one sculptor, one architect, and one landscape architect, all of whom shall be residents of the city, and three other residents of the city no one of whom shall be a painter, sculptor, architect, landscape architect or active member of any other profession in the fine arts.
b. All the members of the commission shall serve without compensation for their service on the commission. Those whose service is not ex officio shall be appointed by the mayor from a list of not less than three times the number to be appointed, such list to be submitted by the Fine Arts Federation of New York. In case the Fine Arts Federation shall fail to present a list of nominees within three months from the time when a vacancy occurs, the mayor shall appoint without such nomination. In case the mayor shall fail to appoint within one year from the time when a vacancy occurs, such vacancy shall be filled by the commission for any balance of the unexpired term.
c. In all matters which come before the commission pertaining to work under the special charge of an agency, the head of such agency may act as a member of the commission. Each president of an institution who is an ex officio member may, by a writing filed with the executive director of the commission, appoint a trustee of the institution of which he is president to serve in his place as member of the commission. Such appointment shall be revocable at any time by such president and shall terminate whenever he ceases to be president.