A través del espejo

2016

Dawn of Zoology

1968

The Poles

1962

Exotic Zoology

1959

The Year's Greatest Science-Fiction and Fantasy 3rd Annual Volume

1958

Engineers' Dreams

1954

Rockets, Missiles & Space Travel

1953

Dragons in Amber

Further Adventures of a Romantic Naturalist

1951

The Conquest of Space

1949

Astounding Science-Fiction, October 1942

1942

The Lungfish, the Dodo, and the Unicorn

An Excursion into Romantic Zoology

1941

Astounding Science-Fiction, December 1940

1940

Astounding Science-Fiction, March 1939

1939