American Literary History: Romanticism, Realism and Naturalism: Realism
http://www.luc.edu/faculty/cschei1/teach/rrn2.html
An overview of the differences between Romanticism, Realism, and Naturalism as they pertain to literature.
Maupassant Original Short Stories
https://www.gutenberg.org/files/3090/3090-h/3090-h.htm
A large collection of short stories by Guy de Maupassant, free online through Project Gutenberg.