An autograph is a handwritten message affixed by an author on a copy of one of his works. It can be specifically addressed to the near of the author, a colleague, and signed or not. Sometimes it is decorated with a drawing (Cocteau), a collage (Prévert) ...

A first edition is the first text print in a given state. Is the first impression of a work. It is sought after by collectors, bibliophiles, for its rarity, specific characteristics and quality of his condition.

Vellum, calf, morocco, grief, sheepskin .... Jansenist to the band, the grotesque ... Full, half, with corners ... percaline ... signed or not, much of expression that may qualify a binder.

Le Littre laconically defines bibliophile like "love of books."

The classic definition is that a former book is simply a book that was printed before 1851. But today the term refers to a larger reality: it denotes any rare book, more or less valuable, which not in a traditional library but in "antiquarian booksellers."