Friends:
While not LA Noir, have a look at this website - about The Sunset Strip, Hollywood and environs, music and club scene, and people, from the '60s. Fascinating, from the folks who were there, and interesting pictures.
Stuff about the Whisky, Pandora's Box, The Trip, Sea Witch, Body Shop, Largo, Classic Cat, Gazzari's, London Fog, etc., and musicians and music industry types, girlfriends, groupies, hangers-on, go-go dancers, strippers, and wannabees. And where-are-they now stuff.
You'll recognize lots of names.
Great first-hand LA history.
http://www.hollywoodhangover.com