The poetically unimaginative but accurately titled The Horror Stories of Robert E. Howard is a book of short fiction from 2008 that collects a massive number of short stories from arguably the best writer of the Pulp Era.
I've been reading the collection on and off for several months now, and while there's a very good reason why Conan is Howard's most enduring creation, this book provides an excellent survey that hammers home just how damn good he was as a writer.
Some of the stories are better than others, with some I would call essential fantasy reading, but there isn't a single one I would say is “bad.” The theme being horror, that's what you end up with: spooky tales, the genesis of the Weird West genre, monster hunters, and eldritch abomination slayers. Action and imagination are the cornerstones of Howard, and every single genre he puts his hand to spins something enjoyable.
Rather than dwelling on a single story, I'll review them in smaller chunks because while they've all been enjoyable, some have more meat on their bones than others.
In the Forest of Villefère (Weird Tales, August 1925)
A traveler named de Montour is passing through a forest on the way to the village of Villefère. He meets a fellow traveler, Carolus le Loup. With a name like that, he's obviously a werewolf and attacks de Montour when the moon rises. A slight tale, but atmospheric with explosive action at the end.
Wolfshead (Weird Tales, April 1926)
The sequel to the above story, this time a new narrator travels to Africa and the fortress of one Dom Vincente da Lusto, a trader and slaver who has carved himself a small empire there. Among the guests there is de Montour, who is himself a werewolf now and tries to lock himself away from others when the moon rises, but of course that doesn't work 100% and a couple people in the castle start dying. Then one of Vincente's courtiers starts a slave revolt as a power play against him and it ends in some literal explosive action. The slavery issue (which makes sense given that its set during the Age of Sail, also Dom Vincente isn't a very good man in the first place) will be a turnoff for some but the action is top notch and an early example of a “heroic werewolf” in fiction. De Montour's desire to lock himself away during the full moon notably prefigures Larry Talbot from the Wolfman movies.
The Dream Snake (Weird Tales, February 1928)
On a warm summer night down South, an old man named Faming explains his horrific dreams of being hunted by a gigantic snake. Every night its the same dream, only the snake gets closer. A short and simple creepy tale.
Sea Curse (Weird Tales, May 1928)
Now we're getting somewhere. The first of the “Faring Town” stories about a small coastal town that suffers from weird incidents. This is about two drunken scoundrels and pirates named John Kulrek and Lie-lip Canool. Kulrek did wrong by one of the girls of the village, and when she died at sea, her old mother, Moll Farrell, places a curse on the two. I'll say no more, since the payoff is fantastic.