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Rating Development for Flow Through Culverts Under SR 9336 in the Everglades National Park III: Final Report TECHNICAL PUBLICATION ERA# 437; "January 2006."
2006-01
Rating Development for Flow Through Culverts Under SR9336 in the Everglades National Park II: Rating Calibration TECHNICAL PUBLICATION; ERA # 423; "April 2005."
2005-04
Rating Development for Flow Through Culverts Under SR9336 in the Everglades National Park I: Concepts and Methods TECHNICAL PUBLICATION; ERA # 422; "April 2005."
2005-04
Culvert headwall Blue Ridge Parkway Virginia, Section 1R.
View on map 
1936-09-25
Men working in culvert Mammoth Cave National Park; National Park Service
View on map 
Workmen digging ditch around cabins Mammoth Cave National Park; National Park Service
View on map 
Culvert Headwall layout plan, section 2A-1, Shenandoah-Great Smoky Mountains National Parkway Blue Ridge Parkway North Carolina Section 2A.
Culvert headwall Blue Ridge Parkway Culvert Headwall Sta 469+29, Virginia, Section 1S.
View on map 
1936-09-29
Drawing of Box Culvert Terminus, Section 2C, Shenandoah - Great Smoky Mountains Parkway, NC Blue Ridge Parkway North Carolina Section 2C.
Drawing of Box Culvert Terminus, Section 2C, Shenandoah - Great Smoky Mountains Parkway, NC Blue Ridge Parkway North Carolina Section 2C.
Offset layout plans, Section 2A, Blue Ridge Parkway, NC Blue Ridge Parkway Offset Layout Plans, Sta 544, North Carolina Section 2A.
1936-03-24
Culvert headwall Blue Ridge Parkway Culvert Headwall - Sta 1060+08, Virginia, Section 1R.
View on map 
1936-10-03
Yellowstone photo album 11, page 60 Yellowstone National Park
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Circa 1931
View series 
Man lighting lamp on top of concrete wall Mammoth Cave National Park; National Park Service
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Offset layout plans, Section 2A, Blue Ridge Parkway, NC Blue Ridge Parkway Offset Layout Plans, Sta 581+05 & 517+11, North Carolina Section 2A.
1936-03-23
Headwall Layout of Box Culvert, Section 2D, Blue Ridge Parkway, NC Blue Ridge Parkway North Carolina Section 2D.
Headwall layouts for culvert, Section 2C, Blue Ridge Parkway, NC Blue Ridge Parkway Headwall Layouts for Culvert, Sta 155+37, North Carolina Section 2C.
1936-06-04
Headwalls for culvert Blue Ridge Parkway Headwalls for Culvert at Sta 469+29, Virginia, Section 1S.
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1936-12-24
Trails, ditch on location for culvert Mammoth Cave National Park; National Park Service
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Circa 1935
Structure S-12 Water Distribution to Everglades National Park
1982-02
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