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The Douglas Campbell Show: Thwarted woodpecker (humorous sign), Petrified Forest, Flora, MS (1990)
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The Douglas Campbell Show: Exposed clay bank, Petrified Forest, Flora, MS (1990)
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The Douglas Campbell Show: Marker #11, Petrified tree, Flora, MS (1990)
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The Douglas Campbell Show: Petrified log, Flora, MS (1990)
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The Douglas Campbell Show: Petrified log, Flora, MS (1990)
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The Douglas Campbell Show: Marker #7, Petrified Forest, Flora, MS (1990)
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The Douglas Campbell Show: Petrified wood, Flora, MS (1990)
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The Douglas Campbell Show: Petrified wood, Flora, MS (1990)
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The Douglas Campbell Show: Bottle recycling point, Flora, MS (1990)
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The Douglas Campbell Show: Woodland path, Petrified Forest, Flora, MS (1990)
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The Douglas Campbell Show: Twin Mississippi bridges, Vicksburg, MS (1990)
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The Douglas Campbell Show: Cross-section of petrified log, Flora, MS (1990)
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The Douglas Campbell Show: Mississippi River at Vicksburg, MS (1990)
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The Douglas Campbell Show: Mississippi bridges, Vicksburg, MS (1990)
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The Douglas Campbell Show: Twin Mississippi bridges, Vicksburg, MS (1990)