Lancelot and Our Mutual Friend

I'm currently reading two books from the Lost book list
Lancelot, by Walter Percy and Our Mutual Friend, by Charles Dickens.

From the Lostepedia website:
Lancelot is about Lancelot Lamar, a lawyer who, when he discovers that he is not the father of his youngest daughter, kills his wife by blowing up their house. He ends up being confined in a mental institution, where he then dwells on the memories of his frightful past. There is a surrealistic element, where reality blends with delirium.
Lost reference: Sawyer was seen reading Lancelot on the Island. ("Maternity Leave")

Our Mutual Friend is about the son of a tycoon who must marry a specific woman to inherit his father's fortune. He shuns this, leaves, and is presumed drowned which is untrue. He returns under a new identity, gets hired at a company related to his father, marries the same woman on his own merit, not on his father's riches, and only afterwards, assumes his original identity and inherits his fortune.
Lost reference: Desmond carries with him a hardback edition of Our Mutual Friend bound closed with rubber bands, intended only to be opened and read at last before he dies. Presumably knowing the significance of the book to him, Penelope placed a letter of her love and undying devotion in the book, intending Desmond to read it in his deepest moments of despair while incarcerated in military prison. However, he never found the letter there, as he had checked the book into prison storage with the rest of his personal inventory, and it was therefore not returned until his release. In The Swan, he finally found and read her letter when he opened the book to read it because he was contemplating suicide after three years "trapped" in the hatch. ("Live Together, Die Alone")

This occurs at the same time John Locke is also in despair and pounding on the hatch door. The combination of the letter's discovery and Locke's appearance apparently saved Desmond's life as he decided against suicide. ("Deus Ex Machina")

Desmond also hid the key to activate the fail-safe in this book. When the Computer was damaged, he inexplicably was not shown searching for the book/key, and neither were mentioned. He also neglected to take the book with him when he fled although this may be because he believed he had little time left to live and would not be able to read the book. ("Orientation")