| title | creator | language | description | tableOfContents | contributor | subject | created |
| Aircraft and Submarines
The Story of the Invention, Development, and Present-Day
Uses of War's Newest Weapons | Abbot, Willis J. (Willis John), 1863-1934 | en | | | | Aeronautics, Military; Aeronautics; Submarines (Ships); World War, 1914-1918 -- Aerial operations; World War, 1914-1918 -- Naval operations -- Submarine | 2009-09-20 |
| American Merchant Ships and Sailors | Abbot, Willis J. (Willis John), 1863-1934 | en | | | | | 2005-04-18 |
| The Naval History of the United States
Volume 1 | Abbot, Willis J. (Willis John), 1863-1934 | en | | | | | 2007-08-13 |
| The Naval History of the United States
Volume 2 | Abbot, Willis J. (Willis John), 1863-1934 | en | | | | | 2008-08-24 |