The Subchaser Archives is a naval history collection devoted to the 110' submarine chasers of the Great War and the men who served on them, primarily covering 1917 to 1919.
Hunters of the Steel Sharks: The Submarine Chasers of WWI:
The history of the submarine chasers of the Great War, extensively illustrated with period photographs and diagrams. An up-close account of the early days of ASW based on rare, unpublished documents. Softcover, 218 pages. Available on Amazon.com