The following are post cards presumed to have been collected by Nathan Forester Mansfield when he was in the U. S. Navy before and during World War I. These images show life aboard ships, re-coaling operations, and various members of the US fleet at the time.
"U.S.S. Ohio (colorized card); copyright Muller, N.Y."
"A man-o-war at sea; photo by Shaffer"
"Stormy Days for Navy Men"
"How it looks alongside at sea; photo by Shaffer"
"U.S.S. New York (black and white photos)"
"U.S. Battle Ships in Heavy Seas; from the Brown (Brover?) Bros, Newport News, VA"
"Sailors in formation at Yerba Buena Island, CA (identified via Google)"
"The sea wolf (heavy seas and periscope in foreground and ship in background)"
"Scene showing the immensity of it at times (heavy seas with ship masts in background)."
"Battle ships in rough seas, from the brown Bros, Newport News VA. (Shows battleship with water draining off bow and another battleship behind it.)"
"Heavy Seas coming over Foc'sl. 12-8-13, Shaffer's Photo."
"Rough weather for U.S. Navy."
"shows sailors lined up, some with guns, some in white with white duffel bags, tents in the background."
"The broadside (looks like a Maine class battleship)."
"Coaling ship (showing shovel dumping coal and sailors shoveling coal)"
"Firing salvo and smoke screen (ship scenes)"
"(Shows baseball team, crew team, maybe swimmers, and some sort of entertainment on deck of the U.S.S. Wyoming)"
"(shows sailors with dog and ram, sailors with a bear cub?, sailors sitting on big guns, sailors with scrubbing tables, sailors doing laundry)"
"Batallion drill, Commanding Officer inspection"
"U.S.S. Memphis on the rocks at San Domingo (19 Aug 1916 ship and 43 soldiers lost after being struck by a rouge 75 foot high wave. The wreck remained there for 21 years. Three medals of honor awarded.)"
"Sailors in formation (at Yerba Buena Island (as identified by Google))"
"(shows officer sighting through telescope, sailors loading torpedoes onto ship, torpedoes on deck of ship with sailors looking on.)"
"U.S.S. Delaware, guns awaiting orders to fire. (and sailors on deck, so not likely ready to fire)"
"Oil tank explosion scene 8 September 1910, U.S.S. North Dakota, Sept 1910. (Ship commissioned in April 1910, Six medals of honor awarded for this explosion.); F.B. Jones Photo, H. O. Brown and H. E. Abbe."
"A full line-up of twelve inch guns."
"Launching of the U.S.S. Arizona (19 Jun 1915) (This was the same USS Arizona sunk by the Japanese in Pearl Harbor 7 Dec 1941)"
"K Boats and Crews (may be UK.)"
"Scrub tables (and big guns)"
"Big guns on our super dreadnoughts (sailors in the barrels of big guns, has tower like Maine class battleships)"
"Coaling at sea. (shows bucket of coal suspended between two ships and sailor on deck ready to receive it.)"
"In fighting top of Man-o-war"
"Under forced draft; photo by McLoughlin"
"Sailors in white uniforms beside gun breach."
"Inspection U.S.S. Delaware. (Officers checking out rolls of something and sailors in white pants, t-shirts and dixie cup caps."
"Photo by Shaffer (Sailors scrubbing deck wearing dark uniforms and dixie cup hats. Some have legs of pants rolled up.)"
"Marines exercising in Swedish movement drill (JF)."
"Sport on Deck (appears to be two sailors boxing as others look on.)"
"(Sailors in dark uniforms ball room dancing with each other.)"
"Life aboard. (Appears to be sailors writing letters and reading newspapers.)"
"(U.S.S. St. Louis bell dated 1806. Officer in dark uniform and conductor cap overseeing six sailors loading and aiming six inch deck gun)"
"Crew scrubbing deck of ship."
"Sailors scrubbing laundry around scrub tables"
"Sailors playing cards on deck of ship."
"Sailors on hill (identified by Google as Army Point goat Island near Yerba Buena Island with Cadets in sham battle 12 Nov 1912)"
"American Field Piece? (Sailors appear to be loading a cannon onto a ship)"
"X'mas on the high Seas (Drawing of sailors in dark uniforms playing music and dancing on the deck of a ship.)"
"Somewhere at sunrise. (Drawing of a barefoot sailor raising the flag on the deck of a ship.)"
"U.S.S. Alabama (colored drawing printed, 1900-1920); copyright by Muller, N.Y."
"U.S.S. Florida.; (looks like other Muller cards)"
"U.S.S. Kansas (Color drawing); Copyright Muller, N.Y."
"U.S.S. Ohio Copyright Muller (Color drawing)"
"U.S.S. Ohio (Color drawing shows wear); Copyright Muller"
"U.S.S. Michigan (color drawing); copyright Muller"
"U.S.S. Nevada (color drawing); (looks like other Muller cards)"
"photograph of battle ship with U.S.S. Ohio hand written on the card."
"A sailor's Prayer (black and white photo of sailor in a hammock); copyrighted by G. A. Pickard U.S.N., published by R. Wischmeyer, Seattle, WA."
"Back of post card, cancelled April 11 Mare Sl Naval Br, Vallejo, CA from Nathan Forester Mansfield to Thomas Lewellen Mansfield, Watsonville CA. Stamp is upside down (a sign of distress??) stamped Passed by Censor and initialed.)"
"An Illuminated dreadnaught.; Brown Bros Photo, Newport News, VA."
"Battle Formation (colored postcard); (appears to be a Muller card.)"