Underground San Franciscans
A Subterranean Look at San Francisco High Society. Join History Professor Michael Svanevik as he reveals little-known tales about prominent personalities buried at Cypress Lawn. The event is 1:30 p.m. Saturday. Meet at East Gardens Archway at 1370 El Camino Real, Colma. Wear comfortable walking shoes for a leisurely walk on hilly terrain and dress appropriately for the Colma microclimate. Free.
David Hockney docent lecture explores artwork on display at de Young Museum in San Francisco. The event is 2 p.m. Saturday at the Belmont Library, 1110 Alameda de las Pulgas, Belmont. Free.
Día de los Muertos
Four ages 4 and up. Presented by the Latino Cultural Advisory Committee. The event is 2 p.m. Saturday at the San Mateo Public Library, 55 W. Third Ave., San Mateo. Free.
Master Gardener clinics
San Mateo Arboretum Society presents a Master Gardener Plant Clinic from 11:30 a.m. to 1 p.m. Sunday and Organic/Sustainable Gardening with Composting from 1 p.m. to 2:30 p.m. Sunday. Kohl Pumphouse in San Mateo Central Park. Free.