Peter Matthiessen
Peter Matthiessen was an American novelist, naturalist, wilderness writer and CIA agent. A co-founder of the literary magazine The Paris Review, he was a 2008 National Book Award winner. He was also a prominent environmental activist. His nonfiction featured nature and travel, notably The Snow Leopard (1978) and American Indian issues and history, such as a detailed and controversial study of the Leonard Peltier case, In the Spirit of Crazy Horse (1983). His fiction was adapted for film: the early story "Travelin' Man" was made into The Young One (1960) by Luis Buñuel and the novel At Play in the Fields of the Lord (1965) into the 1991 film of the same name.
Works (50)

The Snow Leopard
1979

In the spirit of Crazy Horse
1991

Shadow Country

The tree where man was born
1972

Nine-headed dragon river

The Cloud Forest

Under the Mountain Wall

Tigers in the snow

At play in the fields of the Lord
1965

Killing Mister Watson

End of the Earth

East of Lo Monthang

Indian Country

The Birds of Heaven

In paradise

Sand Rivers
1980

Baikal Sacred Sea of Siberia

In paradise

Far Tortuga
1975

North American Indians

Partisans

Raditzer

Nine-headed dragon river
1986

The Tree Where Man Was Born

Le léopard des neiges

The cloud forest
1961

Blue meridian

On the River Styx and other stories

Shadows of Africa

Blue Meridian

The wind birds

The Birds of Heaven

Zen meditation in plain English

Race Rock

Wildlife in America

Bone by Bone
1999

Midnight turning gray

Men's lives

The tree where man was born

Killing Mister Watson

Baikal

Courage for the Earth

Sal si puedes

De sneeuwluipaard

The Birds of Heaven
2001

African silences

At play in the fields of the Lord

The Tree Where Man Was Born

Ocean Fishes Paintings Of Saltwater Fish

Tijgers in de sneeuw