How many of Edgar Allan Poe's works were not dark?

Most of Poe's works were not "dark' in nature, but it is difficult if not impossible to quantify them. This is one of the most misunderstood aspects of Poe as an author. He is certainly most well known for his Gothic Horror and detective stories, but he wrote humor, satire, fantasy, and Science Fiction. Some non-dark tales were:

• The System of Dr. Tarr and Professor Fether
• The Balloon-Hoax
• Never Bet the Devil Your Head
• The Unparalled Adventures of One Hans Phaal
• The Literary Life of Thingum Bob, Esq.
• The Narrative of Arthur Gordon Pym of Nantucket (novel)
• The Thousand-and-Second Tale of Scheherazade
• Why the Little Frenchman Wears His Hand in a Sling

As for his poetry, by far the greater number of his poems were unlike "The Rave." In fact many were written in praise of the women in his life. Some example are these:

• An Acrostic
• Enigma
• For Annie
• Tamerlane
• Al Aaraaf
• Sonnet__To My Mother
• To F. S. O. (Frances Sargent Osgood)
• To Helen
• To M. L. S. (Marie Louise Shew)

Poe also wrote numerous articles, essays and critiques on various subjects.

Poe was far from just the Gothic horror story write people think of him today, but that i s only because it is those stories that made him famous.