If you know which inventory item you need, but you don't know or remember where you can retrieve it, you can refer to the following list.
It only tells where to find the items and the first act you can retrieve the item, but not when or how to use it in the game.
You can find that information in our full walkthrough on this site.
Warning: The list DOES contain spoilers that may spoil the game if you have not played it throughly yourself!
The brass key can be found in the Colonel's room, in the miniature replica of a cannon, above his firplace.
You can find the piece of broken record from Act III and later, in the billiard room on the floor.
The bullet lies next to Lillian's body in the hedge garden in the final act (Act VIII).
The cane can be found in one of the secret rooms in the hallway. Check them all. If you don't know where the secret rooms are, refer to the Hint Book
The carrot is on the table in Celie's shack.
You can find the cigar laying on the ground in one of the secret rooms in the upper passageways in Act IV. If you don't know where the secret rooms are, refer to the Hint Book
The crackers can be found on the nightstand in the cellar (Jeeves' room).
The crank is hidden in the bell of the bell tower. You must first get the bell down (refer to the Hint Book
if you need to know how), before you can take it.
You'll find the crowbar when you SEARCH THE CARRIAGE in the carriage house.
In the Act VIII, you'll find the derringer on the ground.
Open Lillian's suitcase in your and Lillian's bedroom in act VII and you'll find Lillian's diary.
The hanky is dropped on the floor in the front upstairs hallway of the house in act II.
The lantern is hanging on the wall in the stable. Refer to the Hint Book
if you need hints to get it.
SEARCH THE BODY OF CLARENCE in Act VII (he's in the bath of in Colonel's guestroom (Dr Wilbur's room). You'll need to have the lantern at that time.
SEARCH THE BODY OF WILBUR, in Act III of the game and you'll find the monocle.
Notebook and pencil
Search the doghouse in the early acts of the game and you'll find the necklace. You'll need to distract the dog first, refer to the Hint Book
You should not have a hard time finding this item.. in fact you'll only have to find your TAB-key on your keyboard ;-)
Find the oilcan on the table in the carriage house.
The poker is laying on the ground when Wilbur disappeared from the study room in act III. Hurry though, as Jeeves may clean the room up if you wait too long.
You can find the pouch with diamonds in one of the vaults in the tomb room. If you don't know how to get there, then refer to the Notebook
Find the rolling pin on the ground outside near the Barn and the Carriage House(south west) in act V.
Find Lillian's body in the hedge garden in the final act (Act VIII) and search her body. You'll find the skeleton key she carried.
The soup bone is in the refrigator in the kitchen.
The valve handle is in the armor's visor in the front downstairs hallway of the house. Save your game before trying to open the visor though... and uhm... *cough*oilcan*cough*.