One (1) photo of two unidentified sailors, circa 1920s-1930s.

One (1) photo postcard of Walter Herlofson, circa 1917-1918.

Thirteen (13) collectible photo postcards with printed captions of US Navy new recruit activities such as setting up camp, mess call, and boat drill, 1917.

Rigging blueprints for the Curtiss N-9, Curtiss R-3, Curtiss R-6 (Model 2A), and Curtiss Model H-12 Large America aircraft, undated. 25-page booklet bound with brass brads, Herlofson's name faintly visible on front cover and back spine edge. Includes two pages of handwritten notes slipped in front of page 10 (blueprint for Burgess pontoon), dated March 21, 1918.

Book of twenty-four (24) printed black and white postcards of Brest, France, produced by Artaud & Nozais, Nantes, circa 1918. Images illustrate France at war, with shots of Naval ships and submarines and a war port under construction, interspersed with more idyllic shots of parks, squares, chateaus, waterfront views.

Army and Navy Service Book, 1918. Printed for the National Lutheran Commission for Soldiers' and Sailors' Welfare. 107 pages, includes prayers and hymns with music.

Det Nye Testamente Og Salmernes Bog. Minneapolis: Det Norske Bibelselskabs Forlag, 1909. Small Norwegian language New Testament Bible with Herlofsen's name and "Sebeka, Minn." stamped multiple times inside front and back covers.