H. P. Lovecraft & knowledge house 
The Complete Fiction of H. P. Lovecraft: At the Mountains of Madness, The Call of Cthulhu [EPUB ebook] 
The Case of Charles Dexter Ward, The Shadow over Innsmouth, …

This collection contains an active table of contents (HTML), which makes reading easier to make it more enjoyable.
The Stories included are:
-The Nameless City
-The Festival
-The Colour Out of Space
-The Call of Cthulhu
-The Dunwich Horror
-The Whisperer in Darkness
-The Dreams in the Witch House
-The Haunter of the Dark
-The Shadow Over Innsmouth
-Discarded Draft of ‘The Shadow Over Innsmouth’
-The Shadow Out of Time
-At the Mountains of Madness
-The Case of Charles Dexter Ward
-Azathoth
-Beyond the Wall of Sleep
-Celephaïs
-Cool Air
-Dagon
-Ex Oblivione
-Facts Concerning the Late Arthur Jermyn and His Family
-From Beyond
-He
-Herbert West-Reanimator
-Hypnos
-In the Vault
-Memory
-Nyarlathotep
-Pickman’s Model
-The Book
-The Cats of Ulthar
-The Descendant
-The Doom That Came to Sarnath
-The Dream-Quest of Unknown Kadath
-The Evil Clergyman
-The Horror at Red Hook
-The Hound
-The Lurking Fear
-The Moon-Bog
-The Music of Erich Zann
-The Other Gods
-The Outsider
-The Picture in the House
-The Quest of Iranon
-The Rats in the Walls
-The Shunned House
-The Silver Key
-The Statement of Randolph Carter
-The Strange High House in the Mist
-The Street
-The Temple
-The Terrible Old Man
-The Thing on the Doorstep
-The Tomb
-The Transition of Juan Romero
-The Tree
-The Unnamable
-The White Ship
-What the Moon Brings
-Polaris
-The Very Old Folk
-Ibid
-Old Bugs
-Sweet Ermengarde, or, The Heart of a Country Girl
-A Reminiscence of Dr. Samuel Johnson
-The History of the Necronomicon