Statistics for occurrence #1 of “Forts Warren” in page 44 of John D. Billings, Hardtack and Coffee: The Unwritten Story of Army Life:

...nd articles for the government of the armies of the United States. The provision made for the shelter of these troops before they took the field was varied. Some of them were quartered at Forts Warren and Independence while making ready to depart. But the most of the Massachusetts volunteers were quartered at camps established in different parts of the State. Among the earliest of these were C...
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