The Little Book could refer to:
1) The Little Book by English writer David Hughes, the last novel by that writer. It was originally published by Hutchinson in 1996. Written in the first person, it deals with the management of the space between the diagnosis of a serious medical condition and the time left to the sufferer.
2) The Little Book by American writer Selden Edwards. A 2008 time travel novel published by the Penguin Group, it explores a variant of the well-known grandfather paradox. A man from the 1960's California suddenly finds himself walking through the streets of turn-of-the-century Vienna, a millieu he has always been attracted to. He meets many famous (and infamous) historical characters. In between many adventures he meets and falls in love with a young American woman, and has his love amply reciprocated—only to discover, too late, that she is his grandmother who had not yet married his grandfather and now has no intention whatsoever of doing so. Then the grandfather appears on the scene—a nasty, violent and extremely jealous man, whose behavior makes the young woman all the more disinclined to have anything to do with him—but if the two of them never marry, where is the protagonist going to come from? To complicate matters further, the protagonist's father—a heroic World War II secret agent—suddenly also appears on the scene, having somehow traveled back from a Gestapo torture chamber in occupied Paris. And he, too, has a legitimate interest in whether or not his parents will ever marry and bring him into the world...