Towers of Galena Limestone |
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343
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Granite Bowlder at Nora Springs |
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346
|
Bluffs on the Iowa River |
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355
|
West Fork of the Des Moines River |
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360
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Steamboat Rock on Maquoketa River |
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363
|
The Iowa River |
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368
|
Jasper Pool, Lyon County |
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379
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Lithographic Stone, Mitchell County |
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388
|
Wild Cat Den, on Pine Creek |
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392
|
Chicaquaka, or Skunk River |
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412
|
Gypsum Ledges, near Fort Dodge |
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428
|
Plymouth Rock, Upper Iowa River |
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430
|
Oneota River, near Decorah |
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431
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Flood Plain of Missouri River |
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433
|
An Iowa Stock Farm |
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437
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Lead Mining near Dubuque |
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438
|