Section 525 - County clerk; duties1. The county clerk shall perform the duties prescribed by law as register, and be the clerk of the supreme court and clerk of the county court within his county. He shall perform such additional and related duties as may be prescribed by law and directed by the board of supervisors.2. He shall provide at the expense of the county, all books, files and other necessary equipment for the filing, recording and depositing of documents, maps, papers in actions and special proceedings of both civil and criminal nature, judgment and lien dockets and books for the indexing of the same as directed or authorized by law.