Kirkendall-Spring / Hikers on the trail to Three Fingered Jack, Mount Jefferson Wilderness, Duschutes National Forest. Oregon, USA, July 2014. Model released.

John Abbott / Low angle view of trees in the Hoh Rainforest, Hall of Mosses Trail, Olympic National Park, Jefferson County, Washington, USA, June.

Gerrit Vyn / Flock of Heermann's Gulls (Larus heermanni) standing on intertidal rocks. Jefferson County, Washington, USA, August.

Tim Fitzharris / Cascading waterfall in Jefferson National Forest, Virginia

Steven David Miller / Mount Rushmore, with the iconic carvings of presidents Washington, Jefferson, Lincoln and Thoedore Roosevelt, Rushmore National Monument, South Dakota, USA. September 2013.

MYN / Gil Wizen / Male Jefferson salamander (Ambystoma jeffersonianum) Mississauga, Ontario, Canada Meetyourneighbours.net project

Kirkendall-Spring / Paintbrush flowers (Castilleja) in bloom, Canyon Creek Meadows below Three Finger Jack, Mount Jefferson Wilderness. Oregon.

Kirkendall-Spring / View north at sunrise from the summit of South Sister, Three Sisters Wilderness, Deschutes National Forest. The Large mountains, distance are Middle Sister, North Sister, Mount Jefferson, Mount Hood a...

Kirkendall-Spring / Rainbow over burnt forest along the Three Finger Jack trail, Mount Jefferson Wilderness, Deschutes National Forest. Oregon, USA, July 2014.

Kirkendall-Spring / Rainbow over burnt forest along the Three Finger Jack trail, Mount Jefferson Wilderness, Deschutes National Forest. Oregon, USA, July 2014.

John Abbott / Hoh Rainforest, Hall of Mosses Trail, Olympic National Park, Jefferson County, Washington, USA, June.

Tim Fitzharris / Dismal Falls, Jefferson National Forest, Virginia

Gavin Hellier / An F-Line streetcar on Jefferson Street, Fisherman's Wharf, San Francisco, California, USA, June 2011

MYN / Piotr Naskrecki / Jefferson salamander (Ambystoma jeffersonianum) from a vernal pool, Woburn, Massachusetts, USA, April. meetyourneighbours.net project

MYN / Piotr Naskrecki / Jefferson salamander (Ambystoma jeffersonianum) swimming, from a vernal pool, Woburn, Massachusetts, USA, April. meetyourneighbours.net project

David Welling / Orchard Oriole (Icterus spurius) male perched in flowering shrub, Sabine Pass, Jefferson County, Texas, USA, June

Jerry Monkman / Big Cherry Pond and the Presidential Range with Black eyed susans (Rudbeckia sp) flowering in the foreground, Pondicherry National Wildlife Refuge, White Mountains, Jefferson, New Hampshire, USA. July...

Gerrit Vyn / Rhinoceros Auklet (Cerorhinca monocerata) portrait on water, in breeding plumage. Jefferson County, Washington, USA, August.

Gerrit Vyn / Aerial view of an oil stained beach, contaminated by the BP Deepwater Horizon oil leak in the Gulf of Mexico. Grand Isle, Jefferson Parish, Louisiana, USA, July 2010.

Gerrit Vyn / Aerial view of an oil stained beach, contaminated by the BP Deepwater Horizon oil leak in the Gulf of Mexico. Grand Isle, Jefferson Parish, Louisiana, USA, July 2010.

Gerrit Vyn / Aerial view of Slickbar oil booms on the beach at Grand Isle, used in the clean up and containment of hazardous oil, from the BP Deepwater Horizon spill in the Gulf of Mexico. Jefferson Parish, Louisi...

Gerrit Vyn / Slickbar oil booms on the beach at Grand Isle, used in the clean up and containment of hazardous oil, from the BP Deepwater Horizon spill in the Gulf of Mexico. Jefferson Parish, Louisiana. USA, July...

Gerrit Vyn / Flock of Brown Pelicans (Pelecanus occidentalis) roosting on Queen Bess Island in Barataria Bay. The nesting colony on this island was heavily impacted by the BP Deepwater Horizon, Gulf of Mexico oil...

Gerrit Vyn / Brown Pelican (Pelecanus occidentalis) swimming near its mangrove island nesting colony in Barataria Bay. Jefferson Parish, Louisiana, USA, July 2010.

Gerrit Vyn / Short-eared Owl (Asio flammeus) on the ground, with erect ear tufts. Jefferson County, New York, USA

Jerry Monkman / A dairy farm in Jefferson, New Hampshire, USA with the Presidential Range of the White Mountains in the distance. October 2007

Kirkendall-Spring / Sculptures of Presidents George Washington, Thomas Jefferson, Theodore Roosevelt and Abraham Lincoln at Mount Rushmore National Memorial, South Dakota, USA

Jerry Monkman / A father and son hunting grouse and woodcock in a private forest in Jefferson, New Hampshire, USA.

Tim Fitzharris / Little Stony Creek flowing through Jefferson National Forest, Virginia

Tim Fitzharris / Waterfalls of Upper Cascades, Jefferson National Forest, Virginia

Tim Fitzharris / Little Stony Creek, Jefferson National Forest, Virginia

Tim Fitzharris / Dismal Falls, Jefferson National Forest, Virginia

Tim Fitzharris / Cascades Falls, Jefferson National Forest, Virginia

Paul D Stewart / Mastodon teeth engraving in Cuvier's 'Ossamens Fossiles' (1812). Mammut americanum is a late pliocene/pleistocene relative of the elephants whose fossils are found only in North America. First discove...

Paul D Stewart / 'Grand Mastodon' engraving in Cuvier's 'Ossamens Fossiles' (1812). Mammut americanum is a late pliocene/pleistocene relative of the elephants whose fossils are found only in North America. First disco...

Paul D Stewart / Elephant skeleton engraving in Cuvier's 'Ossamens Fossiles' (1812). Cuvier, the master of comparative anatomy, referenced modern species with extinct fossils to reveal their affinities and differences...

Paul D Stewart / Portrait of Thomas Jefferson, polymath, American Founding Father and President (b. 13 April 1743 - d. 4 July 1826). Engraving by W.Holl in 'The Gallery of Portraits' 1837 with later colouring, after p...

Joel Sartore / Photo Ark / Fontal dwarf crayfish (Cambarellus schmitti) portrait, from a private collection photographed at Conservation Fisheries. This crayfish was collected in Jefferson County, Florida, USA. Captive.

Kirkendall-Spring / Aerial view of the carved faces of Presidents Washington, Jefferson, Roosevelt and Lincoln at Mount Rushmore National Memorial, South Dakota, USA. June, 2022.

Kirkendall-Spring / Aerial view of the carved faces of Presidents Washington, Jefferson, Roosevelt and Lincoln at Mount Rushmore National Memorial, South Dakota, USA. June, 2022.