Sec. 9. Public libraries are classified as either:
(1) Class 1 libraries, which comprise:
(A) all public libraries established after March 13, 1947; and
(B) all public libraries established before March 14, 1947, that have filed a resolution of conversion under section 10 of this chapter; or
(2) Class 2 libraries, which comprise all public libraries established before March 14, 1947, that have not filed a resolution of conversion under section 10 of this chapter.