Upton Sinclair, Jr., was a Pulitzer Prize-winning American author who wrote over 90 books in many genres. He achieved popularity in the first half of the 20th century, acquiring particular fame for his 1906 muckraking novel The Jungle. It exposed conditions in the U.S. meat pack...

Upton Sinclair, Jr., was a Pulitzer Prize-winning American author who wrote over 90 books in many genres. He achieved popularity in the first half of the 20th century, acquiring particular fame for his 1906 muckraking novel The Jungle. It exposed conditions in the U.S. meat pack...