Historic Tacoma needs more than 40 docents for its bi-annual home tour, “Back to Basics: The Four-Square.” To volunteer, you’ll need to commit to a 2-hour training session a week or so before the event, and serve as a docent in one home for a half day on Sept. 12. In exchange, you will receive a free ticket to see the other homes on the tour. Contact Caroline Swope at cswope@nventure.com or (253) 752-8848 to volunteer.