The Tuolumne County Library and all branches will be closed on Tuesday, April 1st as the library is upgrading its online automated catalog system. This temporary outage will begin on Monday, March 31st and continue through the following day. This means that for both March 31st and April 1st the online catalog will be unavailable for checking library accounts, placing holds, renewing items checked out, or searching for library materials. There will also be no eBook access. The automated phone system will also be unavailable for renewals. However, the Tuolumne County Library website will be operating for users to access for program information. Please feel free to contact the Sonora Main Library for additional information at 533-5507.