The September membership luncheon of the Mercer Island Chamber of Commerce is set for noon, Sept. 8, at the Community and Event Center, 8236 S.E. 24th Street. The speaker is King County Sheriff Sue Rahr. As the county’s top public safety official in King County, Rahr oversees a department of nearly 1,100 employees and a $150 million budget.

Thursday | 8

Grief & Loss Senior Adults Support Group: 1-2:30 p.m., Sept. 8, Community and Event Center, 8236 S.E. 24th Street. Presented by Mercer Island Youth & Family Services Department. Registration required. Free. Facilitator: Betsy Zuber, (206) 275-7752, betsy.zuber@mercergov.org.

Friday | 9

Mercer Island High School Class of 1961 50-Year Reunion: Sept. 9-10. Reunion includes a boat ride around Mercer Island, no-host gathering at the Roanoke, dinner on Saturday night. Contacts: Trudy Webster Krastins, (425) 641-3976, kktk@comcast.net; Missy Martine Day, (425) 868-1451, missy@idledown.com.

Mercer Island Friends of the Library Fall Book Sale: Sept. 9-11, Mercer Island Library, 4400 88th Ave. S.E. During library hours. Members’ pre-sale: Sept. 8. Nonmembers can join at the door. Features over 10,000 books of all genres plus media. New items will be added daily.

Back To School Magic Show: 7 p.m., Sept. 9-10; 2 p.m., Sept. 11, Youth Theatre Northwest, 8805 S.E. 40th Street. Presenter: G.G. Green. Tickets: $12 (cash or check). $4 goes to school of choice. Reservations: (425) 737-0690.

Saturday | 10

MIHS Boys Water Polo Team Car Wash: 10 a.m.-2 p.m., Mercer Island Storage Court, 8501 S.E. 68th St. The boys on both Varsity and JV teams are selling advance tickets now. All proceeds support pool and tournament fees.

Mercer Island High School Class of 2001 Reunion: 8 p.m., Sept. 10, Spitfire, 2219 4th Ave., Seattle 98121. Register online at http://mihs2001.eventbrite.com. Contact: Daniel Becker, daniel.becker@kotisdesign.com.

Sunday | 11

Boys Select Basketball Pre-Tryout Open Gyms: Sept. 11, MIHS Gym, 9100 S.E. 42nd Street. Fifth/sixth grade: 12-2 p.m. Seventh/eighth grade: 2-4 p.m. Mercer Island Boys Basketball Booster Club.

Monday | 12

Boys Select Basketball Parent Information Meeting & Program Overview: 7-8:30 p.m., Sept. 12, MIHS Library, 9100 S.E. 42nd Street. Mercer Island Boys Basketball Booster Club.

“The Power of Three: Insight, Introspection, and Inspiration for Rosh Hashanah” Lecture Series: Sept. 12, Island Crust Cafe, 7525 S.E. 24th Street. Title: “The Three Themes: Malchuyot, Shofarot, and Zichronot.” Presented by Rabbi Yechezkel Kornfeld of Congregation Shevet Achim. Dinner: 6:30-7 p.m. Lecture: 7-7:45 p.m. Q&A: 7:45-8 p.m. Lecture is free. Community is welcome. Contact: events@shevetachim.com.

Infant/Child and Adult CPR with AED Class: 7-9 p.m., Sept. 12, Main Fire Station, 3030 78th Avenue S.E. Cost: $15, at event. Call (206) 275-7607 to reserve a space.

Tuesday | 13

Mercer Island Women’s Club Meeting and Luncheon: 11 a.m., Sept. 13, Sahalee Country Club. First general meeting and luncheon of the year. Speaker: Jennifer Franklin, City of Mercer Island Emergency Preparedness Officer. Cost: $26. RSVP required: jeannebayley@comcast.net.

“House Keys That Open Doors” Reception: 7 p.m., Sept. 13, Community and Event Center, 8236 S.E. 24th Street. Join Habitat for Humanity Seattle/South King County and the community for light refreshments. Contact: Walt Beerman, (425) 260-4929, habitat@seattle-habitat.org.

Thursday | 15

Mercer Island Radio Operators meeting: 7 p.m., Sept. 15, Mercer Island Fire Station, 3030 78th Ave. S.E. Learn about amateur radio communications and emergency preparedness. www.mirohams.org.

Mercer Island High School Class of 1981 30-Year Reunion: Sept. 16-17. All 1981 classmates are invited to attend. Wormburner Golf Tournament, Willows Run Golf Course; Evening Get-Together, Roanoke Inn; Reunion Dinner, Mercer Island Community Center. Sign up at www.mihsclassof81.com.

Friday | 16

Mercer Island Girls Lacrosse Middle School Fall Ball: 5-6:30 p.m., Sept. 16-Oct. 28, Islander Middle School, 8225 S.E. 72nd Street. Grades 5-8. Players will be divided by experience and/or grade level. Cost: $100 (returning players with valid U.S. Lacrosse membership), $75 (new players plus $25 US Lacrosse membership). Contact: Kara Brodman, miglaxms@gmail.com. www.migirlslacrosse.com.

Saturday | 17

First Aid and Adult CPR with AED Class: 9 a.m.-2 p.m., Sept. 17, Main Fire Station, 3030 78th Ave. S.E. Cost: $30, at event. Call (206) 275-7607 to reserve a space.

Sunday | 18

Mercer Island Zumbathon Benefit: 1-3 p.m., Sept. 18, Stroum Jewish Community Center, 3801 East Mercer Way. SJCC and Zumba benefit the American Heart Association. Participants are encouraged to wear red. Suggested donation: $15. www.SJCC.org.

Library

Mercer Island Friends of the Library Fall Book Sale: Sept. 9-11, during library open hours. Pre-sale for members: Sept. 8. Nonmembers can join at the door. Over 10,000 books of all genres plus media. Most items priced 50 cents to $2. New items will be added daily.

The Frazzled Mom’s Guide to Friendship and Renewal: 1:30 p.m., Sept. 18. Join local Mercer Island co-authors, Linda Williams Rorem and Carol Gullstad, as they discuss ways to make women happier and healthier. Please register.

eReader and Digital Downloads Demonstration: 10 a.m., Sept. 24. Learn how to download KCLS eBooks to your eReader or computer during this Digital Downloads demonstration.

Mercer Island Saturday Matinee Film Series: “Libeled Lady” (1936), 1 p.m., Sept. 24.

Children

Baby and Me Story Times: 10:15 a.m., Sept. 20 and 27. Ages 3 to 12 months with adult.

Very Young Toddler Times: 10 a.m., Sept. 21 and 28. Ages 12 to 24 months with adult.

Story Time for Terrific Twos: 11 a.m., Sept. 21 and 28. Ages 2 to 3 with adult.

Preschool Story Times: 10:30 a.m., Sept. 22 and 29. Ages 3 to 5 with adult.

Teens

Teen Zone: 1:45 p.m., Mondays, Sept. 12-26. Hang out, do homework, play board games or just chat.

Teen Advisory Board: 7 p.m., Sept. 20. Voice your opinions on the books, magazines, programs and services the library offers teens while earning one volunteer credit hour and munching on light refreshments.

Online Teen Readers: Check out an online book group for teens. Online Teen Readers are teens reading and talking about books on their own schedule. Find out more at blogs.kcls.org/onlineteenreaders or on Facebook: KCLS Online Teen Readers.