(a) The department shall deposit to the credit of the lifetime license endowment account all money received from:
(1) lifetime hunting, fishing, or combination licenses;
(2) private contributions, grants, and donations made for purposes of this subchapter;
(3) interest income from the investment of money collected under this section; and
(4) any other source provided by law.
(b) The department may accept private contributions, grants, and donations made to the lifetime license endowment account.