Visiting   The Clark Library is located at 2520 Cimarron St., Los Angeles, CA 90018 in the historic West Adams neighborhood Click here for a larger, interactive map   Research: The Clark Library is open to readers Monday through Friday from 9:00 a.m. to 4:45 p.m., holidays excepted. No appointment is necessary, but you will need a photo ID to register. The collections are noncirculating and may be consulted only within the library building. For more information on access to the Clark, call (323) 731-8529. Tours: Tours are by appointment only. Please call (323) 735-7605. (Weekend and evening tours are not available.)