What is the book mentioning torches and lockpicking?

Question

The following answer and question references a book claiming that the heat of a torch somehow helps lockpicking:

• How do I succeed at lockpicking?
• Does equipping a torch actually make picking a lock easier?

Although it's been proven a false rumor nobody ever mentioned the name of the book or its location. What is it?

Answer 1

The book you are looking for is called: Advances in Lock Picking

It exists in both Skyrim and Oblivion. In Skyrim it can be found at:

• Bannermist Tower, on the second floor on a table on the other end of the room entrance. (North-West of Falkreath.)
• Chillwind Depths, on a table located in the last room of the cave.
• The Ragged Flagon - Cistern, on a barrel in the north east room.
• In the Riften Sewers behind a grate, on top of a barrel.
• On the body of a dead Redguard, west of Heartwood Mill.

Excerpt (emphasis mine):

Sometimes the locks have weird spings. They all spring differently, which makes picking it hard. I hold my torch close to the lock. This makes it hot. When it's hot, the springs are all the same. They don't bounce so differently any more. Be careful not to burn yourself.