The text source is http://gutenberg.net.au/ebooks06/0600031.txt
and the works listed are those published post-1922 and not yet recorded for Legamus (or currently in progress)
If I didn't make any mistakes here are the word counts, in ascending order:
Azathoth ~460 words
What the Moon Brings ~700 words
The Book ~1200 words
The Descendant ~1500 words
Poetry of the Gods ~1900 words
and the rest of Lovecraft's works that are devided in chapters (or that should be

The Lurking Fear ~7350 words in 4 chapters
The Horror at Red Hook ~8200 words in 7 chapters
The Shunned House ~10750 words in 5 chapters
The Thing on the Doorstep ~10750 words in 7 chapters
Imprisoned with the Pharaohs ~10800 words in 2 chapters
Through the Gates of the Silver Key ~14400 words in 8 chapters
Dreams in the Witch-house ~14800 words
Medusa's Coil ~16700 words
The Dunwich Horror ~17300 words in 10 chapters
The Whisperer in Darkness ~26400 words in 8 chapters
The Shadow over Innsmouth ~26800 words in 4 chapters
At the Mountains of Madness ~40900 words in 12 chapters
The Case of Charles Dexter Ward ~51100 in many chapters