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Date: 1896 

Description: Side view of a passenger pigeon, a species of pigeon now extinct. Part of a group of pigeons that lived in captivity in the aviary of Professor C.O. Whitma...

Date: 1896 

Description: Profile view of a passenger pigeon, a species of pigeon now extinct. Part of a group of pigeons that lived in captivity in the aviary of Professor C.O. Whi...

Date: 1996-11 

Description: "A 90-foot-long culvert will serve as an entrance for researchers."

Date: 1896 

Description: Group view of several passenger pigeons (possibly other types of pigeon also?), a species of pigeon now extinct. Part of a group of pigeons that lived in c...

Date: 1960-02-02 

Description: Four members of Ducks Unlimited inspect a gun at the annual banquet held at the Club Chanticleer. Left to right are Toby Sherry, banquet chairman; Fred Gag...

Map or Atlas

State of Wisconsin

Date: 1912 

Description: This map from the U.S. General Land Office shows railroads, counties, cities and villages, rivers, lakes, U.S. Land Offices, Indian reservations, military...

Date: 1896 

Description: View of a young passenger pigeon with immature plumage. The passenger pigeon is now extinct. A dove is visible in the background. Part of a group of pigeon...

Date: 1996-11 

Description: "The Neda mine has four miles of corridors over about 22 arches."

Date: 1896 

Description: Profile view of a passenger pigeon, a species of pigeon now extinct. Part of a group of pigeons that lived in captivity in the aviary of Professor C.O. Whi...

Date: 1896 

Description: Two passenger pigeons (left bird possibly a different species). The passenger pigeon is now extinct. Part of a group of pigeons that lived in captivity in...

Date: 1896 

Description: Profile view of a young passenger pigeon, on a cardboard box. This species of pigeon is now extinct. One of a group of pigeons that lived in captivity in t...

Historical Essay

Leopold, Aldo, 1887-1948

Father of Wildlife Ecology

Learn about the man whose focus on the philosophy of conservation would inspire the environmental movement during the mid-20th century.

Date: 1896 

Description: Profile view of a passenger pigeon, a species of pigeon now extinct, in a cage. Part of a group of pigeons that lived in captivity in the aviary of Profess...

Date: 1896 

Description: A passenger pigeon on a perch. The passenger pigeon is now extinct. Part of a group of pigeons that lived in captivity in the aviary of Professor C.O. Whit...

Date: 1996-11 

Description: "What was a thriving iron ore mine at Neda is now home to some 500,000 bats. The steel cage keeps humans out, but allows access for the bats."

Date:  date unknown

Description: Drawing of Prairie Wolf.

Date: 1896 

Description: Rear view of two passenger pigeons in a cage. This species of pigeon is now extinct. The pigeons lived in captivity in the aviary of Professor C.O. Whitman...

Date: 1896 

Description: Profile view of several passenger pigeons, a species of pigeon now extinct. Part of a group of pigeons that lived in captivity in the aviary of Professor C...

Date: 1896 

Description: Seven passenger pigeons (possibly other types of pigeon as well?), a species of pigeon now extinct. Part of a group of pigeons that lived in captivity in t...

Date: 1975 

Description: Color photo of three men looking at a trailer with a woman posed on roof holding a paintbrush to a painted mural. One of the men is Ricardo Alonzo, muralis...

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