Whispering Halls

Transient Curse 2 - Top floor of the first room in a chest by a sword & shield hollow

Archive Giant Cell Key

Elizabeth's Mushroom - Top floor second room in a chest

Souvenir of Reprisal - Near Logan's spot in the library above the bonfire

Green Titanite Shard 5 - In the library above the bonfire just before the lowering stairs

Blue Titanite Chunk 3 - Roll to a chest on the stairs down to the bonfire

Twinkling 2 + Blue Titanite Chunk 2 - Crystal Lizard - Just outside of the bonfire room drop down and turn around to the left

Green Moss Clump - In a chest where the old bonfire used to be

Maiden set - In the forest outside the bonfire in a double crystal golem gank

Blue Titanite Chunk - To the left of the entrance down to the Crystal Caves

Crystal Iron Crossbow - In a chest by the Archer at the top of the ladder down to the bonfire, jump across

Soul of a Rusted Knight +  Crystal Greatsword - 2nd floor first room  by the chest and spellcaster npc

Egg Vermifuge 2 - 2nd floor first room in a chest by the spell npc

Soul Spear - Kill the spellcaster NPC on the 2nd floor first room

Confirmed Drops

Sword&Shield Hollow - Kite Shield + Crystal Straight Sword