San Francisco, Portrait of a City 1940-1960, by Fred Lyon (Princeton Architectural Press; $40). The Photography of Jim Marshall Insight Editions; 296 pages; $50. Mark Twain and the San Francisco Writers Who Reinvented American Literature, by Ben Tarnoff (The Penguin Press; $27.95). The Panama-Pacific International Exposition of 1915, by Laura A. Ackley (Heyday/California Historical Society; 352 pages; $40). Ansel Adams in Yosemite Valley: California Coastal Access Guide: Seventh Edition, by the California Coastal Commission (UC Press; 416 pages; $34.95 paperback).