American novelist and journalist. He pioneered the naturalist school and is known for portraying characters whose value lies not in their moral code, but in their persistence against all obstacles. Dreiser's outstanding works were the novels Sister Carrie (1900) and An American Tragedy (1925).

Dreiser was a committed socialist, and wrote several non-fiction books on political issues. These included Dreiser Looks at Russia (1928), the result of his 1927 trip to the Soviet Union, and two books presenting a critical perspective on capitalist America, Tragic America (1931) and America Is Worth Saving (1941).