Johnston, David
From PigBoats.COM
Visual Guide to the S-class
•A Visual Guide to the S-class Submarines 1918-1945 Part 1: Concept Development (4th Edition, February 2023)
•A Visual Guide to the S-class Submarines 1918-1945 Part 2: The Government Boats (5th Edition, February 2023)
•A Visual Guide to the S-class Submarines 1918-1945 Part 3: The Electric Boat Groups (3rd Edition, February 2023)
Visual Guide to the Fleet Submarines
•Link
•Link
•Link
Various
•A Discussion of USN Submarine Naming and Designation Systems
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Ric Hedman & David Johnston
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