The board of any urban district may receive and accept gifts, donations and bequests of paintings, engravings, etchings, statuary and other works of art, curios, historical relics, collections of minerals and other articles proper to a museum for use in connection with the public schools, and may appropriate the sums necessary to properly care for, preserve and exhibit the same. The board may also receive gifts and bequests of money and other property for use, and use the same in increasing, preserving, maintaining and caring for the art and museum collections; and for that purpose may purchase sites and erect proper buildings for art and museum collections. Whenever the board files a verified statement with the county clerk, signed by the board or a majority of its members, certifying that, in its or their opinion, the art and museum collections are of the value of not less than twenty-five thousand dollars, then the board may submit to the voters of the school district a proposition to vote bonds for the purpose of erecting an art gallery and museum building for the proper keeping and maintaining of the art and museum collections, which proposition shall be submitted to the voters of the school districts under all the terms and conditions of sections 164.131, 164.151 and 164.161.