Which Harry Potter books reveal which items were turned into Horcruxes?

Answer 1

Harry does not get all of the horocruxes at once. He receives the first one in the second book when he finds tom riddles diary. He finds another one during the 6th book when Dumbledore has the ring on his finger. The locket is also found at the end of the 6th book. The rest are found spread out throughout the 7th book. Harry is the last and 8th horocrux.

Answer 2

Horcruxes were first mentioned in Harry Potter and the Half-Blood Prince and featured heavily as part of the storyline which then continued in Harry Potter and the Deathly Hallows.

Answer 3

Tom Riddle's Diary from The Chamber of Secrets,

Salazar Slytherins locket from The Deathly Hallows,

The Resurrection Stone from The Deathly Hallows,

Nagini The Snake from The Deathly Hallows,

Rowena Ravenclaw's Diadem, The Deathly Hallows,

Helga Hufflepuff's Cup, The Deathly Hallows,

Harry Potter himself, The Sorcerers Stone.