San Franciso Mayor Gavin Newsom, heralded as a pioneer for the gay marriage-rights movement, will speak at the Chicago offices of Winston & Strawn LLP Tuesday, Oct. 5, 5:30-7:30 p.m., 35 W. Wacker.

Event co-hosts include Carlos Mock.

RSVP by Sept. 18, Mike Montgomery at (415) 279-9042 or e-mail to mike.montgomery@gmail.com.