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| Jack Kaufman discusses growth in the Florida Defenders of the Environment and the Cross Florida Barge Canal |
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| Jack Kaufman discusses growth in the Florida Defenders of the Environment and the Cross Florida Barge Canal |
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| Jack Kaufman gives the true meaning of “Endangered” in relation to the Florida Panther |
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| Jack Kaufman gives the true meaning of “Endangered” in relation to the Florida Panther |
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| Jack Kaufman recounts his experiences working with the Florida Defenders of the Environment |
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| Jack Kaufman recounts his experiences working with the Florida Defenders of the Environment |
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| Jack Kaufman speaks on the continuing battle to protect Florida's Environment |
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| Jack Kaufman speaks on the continuing battle to protect Florida's Environment |
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| Jack Kaufman talks about Florida Defenders of the Environment |
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| Jack Kaufman talks about Florida Defenders of the Environment |
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| Jack Kaufman talks about how there is more environmental awareness than in previous decades |
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| Jack Kaufman talks about how there is more environmental awareness than in previous decades |
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| John Gifford inspecting a melaleuca branch, Davie, June 4, 1938. |
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| John Gifford inspecting a melaleuca branch, Davie, June 4, 1938. |
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| The Knockabout club in the Everglades |
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| The Knockabout club in the Everglades |
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| A lady sitting on the fallen tree in the jungle and Everglades |
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| A lady sitting on the fallen tree in the jungle and Everglades |
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| Lake Okeechobee and environs, 1912-1916 |
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| Lake Okeechobee and environs, 1912-1916 |
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| Landscape patterns of periphyton in the Florida Everglades |
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| Landscape patterns of periphyton in the Florida Everglades |
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| Landscapes, circa 1890-1910 |
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| Landscapes, circa 1890-1910 |
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| Landscapes in the Miami region, approximately 1897-1899 |
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| Landscapes in the Miami region, approximately 1897-1899 |
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| The least known wilderness of America |
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| The least known wilderness of America |
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| The least known wilderness of America |
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| The least known wilderness of America |
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| The least known wilderness of America |
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| The least known wilderness of America |
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| Letter and clipping pertaining to 1922 trip across the Everglades. |
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| Letter and clipping pertaining to 1922 trip across the Everglades. |
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| Letter from Duncan U. Fletcher |
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| Letter from Duncan U. Fletcher |
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| Letter from Joseph K. (Tahan) Griffis |
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| Letter from Joseph K. (Tahan) Griffis |
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| Letter from Nathaniel S. Thomas |
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| Letter from Nathaniel S. Thomas |
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