Lymphoma Research Ride registration, for the Sept. 30 noncompetitive 25- or 50-mile bike ride alongside survivors and other supporters. A benefit for the Lymphoma Research Foundation. The ride will start at Barnesville School in Dickerson. www. lymphoma.org/ride2012.
Shrimp and Oyster Feast, tickets available for the Sept. 30 all-you-can-eat steamed shrimp and fried oysters fundraiser for the Bethesda-Chevy Chase Rescue Squad. 5020 Battery Lane. $40; at the door, $45. 301-977-6634.
Short-story writing contest, for high school students: a feature of the 2013 Gaithersburg Book Festival. Visit www.gaithersburgbookfestival.org. 301-258-6350.
Spanish-speaking election judges needed, adults are needed to serve as election judges at polling places on General Election Day, Nov. 6. Montgomery County Board of Elections, 240-777-8532 or email@example.com.
Free electronics disposal (for recycling), acceptable items include televisions, desktop computers; gaming consoles; telephones and answering machines; small appliances; and electronic toys (with batteries removed). 7:30 a.m.-2 p.m., Verizon Chesapeake Complex, 13100 Columbia Pike, Silver Spring. 410-393-7109 or firstname.lastname@example.org.
Child safety-seat inspection, a check on the installation of seats and boosters required for age 7 and younger (unless they weigh more than 65 pounds or are at least 4 feet 9 inches tall). Sponsored by the Montgomery County Police Department. 10 a.m.-12:30 p.m., Fitzgerald Auto Mall, 5501 Nicholson Lane, Rockville. Free. 301-770-3300.
Downloading eBooks and audio books workshop, guidance in accessing the library’s digital collections. Take a WiFi-enabled device such as a laptop computer to the training session. 10:15 a.m., Damascus Library, 9701 Main St. Free. 240-773-9444.
Line-dancing classes, 10:30 a.m.-noon Thursdays: led by JoAnn Eng and Lorraine Bour; 10:30 a.m.-noon Saturdays: led by Myung Anderson. Margaret Schweinhaut Senior Center, 1000 Forest Glen Rd., Silver Spring. Free. 240-777-8086.
Jewish book discussion, a talk about Allegra Goodman’s, “Kaaterskill Falls,” a novel set in upstate New York in the summer of 1976. 1 p.m., Davis Library, 6400 Democracy Blvd., Bethesda. Free. 240-777-0922.
Fulks Corner farmers market, seasonal fruits and vegetables from local farms. 2-6 p.m. Thursdays. Fulks Corner Avenue at Route 355, Gaithersburg. 301-590-2830.
Teen-book authors event, Jenny Han and Siobhan Vivian talk about “Burn for Burn,” their novel about friendship and revenge. 5-8 p.m., Bethesda Library, 7400 Arlington Rd. Free. 240-777-0970.
Social Security public forum, for people not yet receiving Social Security; representatives from the agency discuss pending retirement and the online application process. 5-6 p.m., Little Falls Library, 5501 Massachusetts Ave., Bethesda. Free. 240-773-9520.