Christian Motorcycle Association, 6 p.m. dinner; 7 p.m., meeting, Pine Tree Restaurant, Mono Way at 19601 Hess Ave., East Sonora.
Southern Tuolumne County Historical Society Board of Directors, 7 p.m., basement meeting room, Groveland Library and Museum, 18990 Main St., Groveland.
Professional Referral Organization of Sonora, 7 a.m., Perko's Cafe, Sonora, 533-5044.
Railtown 1897 State Historic Park volunteer work day, 9 a.m. to 3 p.m., Fifth Avenue and Reservoir Road, Jamestown, 984-3953.
Tuolumne County Board of Supervisors, 9 a.m., Tuolumne County Administration Center, supervisors' chambers, fourth floor, 2 S. Green St., Sonora.
Tuolumne County Museum volunteer work day, 9 a.m. to noon, museum annex, Lower Sunset Drive, Sonora.
Senior Legal Advocacy, 10 a.m. to noon, 14855 Mono Way, Suite 103, East Sonora, 588-1597.
Groveland Friends of the Library, 1:30 p.m., Groveland Community Hall, Main Street, Groveland.
Summerville Parent Nursery School parents' meeting, 6:30 p.m., Arastraville School, Tuolumne Road North, Tuolumne, 928-4288, 586-7666.
Summerville High School Board of Trustees, 7 p.m., library, school, 17555 Tuolumne Road, Tuolumne, 928-4228.
Tuolumne Utilities District Board of Directors, 7 p.m., district office, 18885 Nugget Blvd., off Tuolumne Road.
Calaveras County Board of Education, 4:30 p.m., Calaveras County Schools Office, 185 S. Main St., Angels Camp.
Toughlove, 7 p.m., bus drivers' lounge, Calaveras High School, 350 High School St., San Andreas.
Calaveras County Women's Network, call for time, Ironstone Vineyards, Murphys, 728-9941.
Calaveras Croakers Toastmasters Club, 8 to 9 a.m., HRC Child Care Resources' Conference Room, 584 West St. Charles St., San Andreas, 754-4242.
Calaveras County Board of Supervisors, 9 a.m., supervisors chambers, Government Center, 891 Mountain Ranch Road, San Andreas.
Arnold Library story hour, 11 a.m. to noon, Arnold Library, 1065 Blagen Road, Arnold, 795-1009.
Story time for children, 11:30 a.m. to noon, Murphys Volunteer Library, 480 Park Lane, Murphys.
Preschool story hour, 11:45 a.m., Arnold Library, 1065 Blagen Road, Arnold, 795-1009.
Grandparents and Books, 2 to 4 p.m., Calaveras Central Library, 891 Mountain Ranch Road, San Andreas.
Friends of the Logging Museum, 6 p.m., Sierra Nevada Logging Museum, Highway 4, White Pines, near Arnold, 795-1226, www.sierraloggingmuseum.org.
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Weekly Arts and entertainment guide for Calaveras and Tuolumne counties