Updated 26 May 2007

After mount on USS Indianapolis CA-33 in July 1945
Note the "boxy" look, typical of USN 8" (20.3 cm) designs of the 1920s
U.S. Naval Historical Center Photograph # 19-N-86916

USS Quincy CA-39 passing through Straits of Magellan in 1939
Note single periscope on the mounts, indicating that the guns were in one sleeve
U.S. Naval Historical Center Photograph # 83592

Bow mounts on USS Portland CA-33 in 1944
Note the Mark 8 FC Radar on top of the Mark 34 Director and the SK "matress" antenna on the foremast.  At the very top of the foremast appears to be an SP radar antenna.
U.S. Naval Historical Center Photograph # NH 82031

USS New Orleans CA-32 in March 1945
Note the different shape of these later turrets
U.S. Naval Historical Center Photograph # 19-N-80232

After mounts on USS Lexington CV-2 in January 1927
Note that only the upper mounting has a rangefinder

Weapons intended for USS Louisville CA-28 under construction at the Washington Navy Yard

Triple Mount on USS Salt Lake City CA-25
Blistered paint and extruded liners show heavy use
US Navy Photograph

Cutaway sketches of 8" (20.3 cm) projectiles