Source: “Liberty Loans. Official Liberty Bond car, and tank,” Washington, 1918. Harris & Ewing Collection, Library of Congress, https://www.loc.gov/pictures/item/2016869097/. Post-processed in Photoshop.
tank
Fine adjustment: fierce engines of destruction
Sources: New-York Tribune, 1 March 1918, page 9, and “Mrs. A. Ladenburg,” George Grantham Bain Collection, Library of Congress, https://www.loc.gov/pictures/item/2014706437/. Images post-processed in Photoshop.