As used in this part:
(1) "Agency" means any administrative unit of Utah's state government or local government.
(2) "Collecting institutions" means historical societies, museums, archives, and libraries that:
(a) are operated by nonprofit corporations in Utah or by any Utah agency; and
(b) preserve our heritage and benefit society by acquiring and preserving reposited materials.
(3) "Reposited materials" means materials of historical, artistic, literary, or scientific value that are deposited in a collecting institution.