S-4 factoid - she was in commission circa 1919-1936.
USS S-4 (SS-109) LINKS
- USS S-4 (SS-109) - CSP boat tragedy page.
- USS S-4 (SS-109) - S-4's story. Another "Through the Looking Glass" series by Ric Hedman.
- USS S-4 (SS-109) - NavSource Submarine Photo Archive.
- USS S-4 (SS-109) - SubNet S-4 stats and photo page. [ www.subnet.com/fleet/ss109.htm ]
- USS S-4 (SS-109) - DANFS, Dictionary of American Naval Fighting Ships.
- USS S-4 (SS-109) - a U.S. Navy Historical Center S-4 DANFS narrative page.
- USS S-4 (SS-109) - a U.S. Navy Historical Center S-4 photo page.
- USS S-4 (SS-109) - a Neohumanism.org S-4 page.
- USS S-4 (SS-109) - a SubVetPaul.com S-4 narrative history page.
- USS S-4 (SS-109) - an S-4 narrative page by NavyHistory.com.
- USS S-4 (SS-109) - an S-4 page that resembles the old SubNet document; by ussubvetsofworldwarii.org. Yayyyy!!!!! [Included here because the photo page below doesn't always have the link to this page. COB (LINKS)]
- USS S-4 (SS-109) - this is the companion S-4 photo page that goes with the text page above; by ussubvetsofworldwarii.org.
- USS S-4 (SS-109) - SHIP'S HISTORY Researched by: Robert Loys Sminkey, Commander, United States Navy, Retired with a couple of photos.
- USS S-4 (SS-109) - a Wikipedia.org S-4 page.
- USS S-4 (SS-109) - a USSVI Ship's Profile page w/Classification, Characteristics, Key Dates, Reunion/Association, Crew Lists (available on DeckLog), History, Internet Associations and Reunions, Photo and Patch.
- USS S-4 (SS-109) - an identical page to the USSVI page above by Decklog.com.

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