Which images in Edgar Allen Poe`s "The Raven" contribute to its gloomy atmosphere?

The first
image that leads to the gloomyof the poem appears in the first line, where the speaker describes
a midnight dreary.  Both words evoke gloom.  Even the words many a quaint and curious volume
of forgotten lore are kind of creepy and make you think of a spooky story.

Referring to the room as a chamber adds to the spooky atmosphere.  The word just sounds so
much gloomier than some simple word like room.  The images continue...