Postcards of downtown. A Visit to Old Los Angeles; Postcard tour of downtown and central LA, mostly 1900-1915. by Brent C. Dickerson of CSULB.  [ccr]
http://www.csulb.edu/~odinthor/socal1.html

Broadway Theatres.  Photos and history of twelve major theatres on Broadway in downtown Los Angeles.  All are on the National Register of Historic Places.  [ccr]
http://www.gmrnet.com/theaters.html

Downtown Los Angeles Walking Tour.  By Curtis C. Roseman, Geoffrey DeVerteuil, and Jennifer Mapes of USC. Map based exploration of downtown. Includes hundreds of historic and recent photos, plus text.  [ccr]
http://www.usc.edu/dept/geography/losangeles/lawalk/index.html

Historic downtown Los Angeles.   A map-based site from the LA Conservancy. Good description of thirteen historically significant buildings in downtown.  [ccr]
http://www.laconservancy.org/tours/downtown/index.php4

Public Art.  Photos and descriptions of a great variety of public art in the Historic Core, Bunker Hill, the Union Station/Pueblo area, Little Toyko, Chinatown, and other parts of downtown.  Links at the bottom of the front page to public art in other parts of Los Angeles.  Created by Ruth Wallach of the USC Libraries.  [ccr]
http://www.publicartinla.com/Downtown/

Downtown Tour from the Subway Terminal.  A nice historical tour with a neat map, informative text, and good images.  Covers parts of Hill and Broadway, plus Bunker Hill.  May take some time to load. By Tom Wetzel.  [ccr]
http://www.uncanny.net/~wetzel/subwayarea.htm

Mt. Wilson.  Brief history of this significant peak that overlooks the Los Angeles basin, with a few photos, by Marvin Collins.  [ccr]
http://www.oldradio.com/archives/stations/LA/mtwilson1.htm

Olvera Street.  A history of the original settlement of Los Angeles on the north edge of downtown. Brief, with a few photos.  [ccr]
http://olvera-street.com/html/olvera_street__history.html 

Parkinson buildings in Downtown.  L. A. buildings designed by John Parkinson, the most prolific architect of large buildings in LA for decades, including Art Deco buildings. Map, photos, descriptions.  [ccr]
http://parkinsonarchitecture.com/ 

Architectural Photo Gallery.  An extensive collection of photos from all over Los Angeles, indexed in a variety of ways.  Included are a number of downtown buildings indexed by date of construction.  No map. Provided by you-are-here.com.  [ccr]
http://www.you-are-here.com/index.html

Subway Tunnel.   Tour the Pacific Electric tunnel under Bunker Hill that carried trolleys from the Subway Terminal Building in downtown Los Angles to the West side, Hollywood, and the San Fernanado Valley through the first half of the twentieth century.   Created by Elson Trinidad.  [ccr]
http://www.westworld.com/~elson/larail/PE/tunnel.html

USC and University Park.   Two atlases present maps and graphs describing people, institutions, historic sites, and other aspects of the neighborhoods surrounding the University of Southern California.  Created by USC Civic and Community Relations.  [ccr]
http://www.usc.edu/ext-relations/ccr/research/index.html