For the purpose of providing blind persons with remunerative employment, enlarging the economic opportunities of the blind, and stimulating the blind to greater efforts in striving to make themselves self-supporting, blind persons licensed under the provisions of 20 U.S.C. § 107, of 1936, and amendments thereto, an act of the congress of the United States of America commonly known as the Randolph-Sheppard vending stand act, shall be authorized to operate vending facilities on any state, county and city or other property. In authorizing the operation of vending facilities on state, county and city property preference shall be given, so far as feasible, to blind persons licensed by the division of services for the blind of the Kansas department for children and families; and the head of each department or agency in control of the maintenance, operation and protection of state property shall, after consultation with the secretary for children and families, prescribe regulations designed to assure such preference, including exclusive assignment of vending machine income to achieve and protect such preference for such licensed blind persons without adversely affecting the interests of the state of Kansas.