Classic opera: The San Francisco Opera presents “Der Rosenkavalier,” a satirical yet bittersweet tale of fading youth and budding love. Music is by Richard Strauss. [7:30 p.m., War Memorial Opera House, 301 Van Ness Ave.]

Who’s in town

Political journalist and TV and radio commentator Elizabeth Drew discusses her new book, “Richard M. Nixon.” [6 p.m., Commonwealth Club, 595 Market St.]

City activities

Abstract art: Rare works from abstract-expressionist artist Robert Motherwell’s estate are on view in the gallery exhibit “Transformations.” [10 a.m. to 6 p.m., Meyerovich Gallery, 251 Post St.]

LGBT cinema: The San Francisco International LGBT Film Festival continues. Today’s features include “The Fall of ’55,” “Suffering Man’s Charity,” “Shelter Me,” “Another Woman” and “Blueprint.” [www.frameline.org]

At the public library

China travel: “Lonely Planet” author Carolyn Heller gives a slide talk, with a focus on Beijing and its surrounding areas. [6:30 p.m., Latino/Hispanic Room, 100 Larkin St.]

Scavenger hunt and stories: “The mystery of the missing letters” is the focus of this program for ages 3 to 5. [10:30 a.m., Visitacion Valley Branch, 45 Leland Ave.]

Lectures

LGBT leadership: Pride Month conversation features LGBT executives who manage top businesses that create jobs and contribute to the economic vitality of the community. [6 p.m., Commonwealth Club, 595 Market St.]

Evan Wolfson: The civil-rights advocate and Freedom to Marry executive director discusses marriage inequality and its impact on all Americans. [8 p.m., Jewish Community Center, 3200 California St.; RSVP: 292-1278]

Literary events

William Lipsky: The local author discusses “Gay and Lesbian San Francisco.” [7:30 p.m., Books Inc., 2275 Market St.]

Julia Flynn Siler: The veteran Wall Street Journal writer discusses “The House of Mondavi.” [12:30 p.m., Stacey’s Bookstore, 581 Market St.]