Wendt, Herbert
In search of Adam : the story of man's quest for the truth about his earliest ancestors = Ich suchte Adam
Houghton-Mifflin, 1956
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Pfeiffer, John E.
The emergence of society: a prehistory of the establishment
McGraw-Hill , 1977
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Kuhn, Herbert
On the track of prehistoric man
Random House, 1955
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Scheele, William E.
Prehistoric man and the primates
World Publishing, 1957
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Hoebel, E. Adamson
Man in the primitive world
McGraw-Hill, 1958
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