Communications and Intelligence |
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Allan Pinkerton with His Men717 views
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Federal Observation Balloon Intrepid621 views
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Scouts and Guides613 views
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Teams Constructing Telegraph Lines618 views
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Signal Tower at Cobb's Hill599 views
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Allan Pinkerton521 views
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Bureau of Military Information545 views
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Prof. Thaddeus S. Lowe and Balloon Intrepid489 views
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Allan Pinkerton, President Lincoln, and General John A. McClernand460 views
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Allan Pinkerton, President Lincoln, and General John A. McClernand452 views
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Military Telegraph Operators575 views
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Scouts and Guides644 views
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