Best libraries in San Francisco

We've got many great places to read a book in San Francisco. What's everyone's favorite library?

Golden Gate Valley Library-1801 Green St,San Francisco
Harris M Fishbon Memorial Library‎ - 1600 Divisadero St, San Francisco
Hastings College of the Law: Law Library‎-200 McAllister Street,San Francisco
Jewish Education Library ‎-1835 Ellis St, San Francisco
Market Street Library‎ - 685 Market St, San Francisco
Mission Bay Library‎ - 960 4th St, San Francisco
Planetree Health Library Institute‎ - 2040 Webster St, San Francisco
Planetree Health Library Institute for Health & Healing Informat‎ -2040 Webster St, San Francisco
Prelinger Library‎ - 301 8th St, San Francisco
Presidio Library‎ - 3150 Sacramento St, San Francisco
Public Library of Science‎ - 185 Berry St # 3100, San Francisco
Richard A Gleeson Library‎ - 2130 Fulton St, San Francisco
San Francisco Law Library‎ - 400 Mcallister St, San Francisco
San Francisco Law Library‎ - 401 Van Ness Ave, San Francisco
San Francisco Public Library - 100 Larkin St, San Francisco
San Francisco Public Library‎ - 300 Bartlett St, San Francisco
SFL Sally Brunn Branch Library‎ - 451 Jersey St, San Francisco
SFPL Anna E Waden Branch Library‎ - 5075 3rd St, San Francisco
SFPL Anza Branch Library‎ -550 37th Ave, San Francisco
SFPL Chinatown Branch Library‎ 1135 Powell St, San Francisco
SFPL Excelsior Branch Library‎ - 4400 Mission St, San Francisco
SFPL Glen Park Branch Library‎ - 2825 Diamond St, San Francisco
SFPL Ingleside Branch Library‎ - 1649 Ocean Ave, San Francisco
SFPL Marina Branch Library‎ - 1890 Chestnut St, San Francisco
SFPL Merced Branch Library‎ -155 Winston Dr, San Francisco
SFPL Ocean View Branch Library‎ - 345 Randolph St, San Francisco
SFPL Ortega Branch Library‎ -3223 Ortega St, San Francisco
SFPL Park Branch Library‎ - 1833 Page St, San Francisco
SFPL Parkside Branch Library‎ - 1200 Taraval St, San Francisco
SFPL Portola Branch Library‎ - 2450 San Bruno Ave, San Francisco
SFPL Potrero Branch Library‎ - 1616 20th St, San Francisco
SFPL Sunset Branch Library‎ - 1305 18th Ave, San Francisco
SFPL West Portal Branch Library‎ - 190 Lenox Way, San Francisco
Sutro Library‎ - 480 Winston Dr, San Francisco
Visitacion Valley Library‎ - 45 Leland Ave, San Francisco
Walter F Schall Memorial Library‎ - 900 Hyde St, San Francisco
Western Addition Public Library‎ -1550 Scott St, San Francisco