Abraham Lincoln and Ulysses S. Grant biographer Ronald White discusses Lincoln’s diary, notes he wrote on small scraps of paper that reveal new and surprising aspects of the president, starting at 7:30 p.m. tonight at the Huntington, 1151 Oxford Road, San Marino. Free. No reservations required. Call (626) 405-2100 or visit huntington.org.
Free films screen at 1 p.m. Fridays at Pasadena Senior Center, 85 E. Holly St., Pasadena. Friday’s film is the 2017 hit, “Ladybird.” Call (626) 795-4331 or visit pasadenaseniorcenter.org.
The Caltech Orchestra, directed by Allen Robert Gross, performs works by Rachmaninoff and Beethoven, with featured piano soloist Youngjoon Choi, starting at 8 p.m. Saturday and 3:30 p.m. Sunday in Caltech’s Ramo Auditorium, 1200 E. California Blvd., Pasadena. Free. No tickets or reservations required. Call (626) 395-3295 or visit events.caltech.edu.
A free chamber music concert features LA Philharmonic clarinetist Michele Zukovsky, violinist Lyndon Johnston and cellist David Garrett, plus pianist Junko Ueno Garrett, performing works by Zemlinsky and Brahms, starting at 4 p.m. Saturday at the First United Methodist Church of Pasadena, 500 E. Colorado Blvd., Pasadena. Visit fumcpasadena.org.