Flagpoles at State parks may be donated by donors of the lands upon which State parks are situated, and if such donors express a desire to donate flagpoles, such donations shall be accepted in preference to that of any other individual or group. In the event that the donors of the lands upon which the State parks are situated shall  not indicate a desire to donate flagpoles therefor within six months of the date of the passage of this Article, donations for flagpoles shall be accepted from individuals or groups who may desire to make such donations and erect the said flagpoles in keeping with the State park regulations. (1963, c. 317, s. 3.)