A novella is a piece of standalone prose fiction that’s not as long as a novel, yet not as short as a short story/novelette. In brief, a novella is a short novel.
Marginalia refers to anything written or drawn in the margins of a book. It could be in the form of scribbles, doodles, illustrations, or glosses.
Limp binding is a bookbinding method wherein a book has supple sides made of cloth, leather, or paper instead of hardback covers. When the material is vellum, the method of bookbinding is known as limp vellum.
Juvenilia are literary, musical, or artistic works of artists in their childhood or youth. Juvenilia are usually published many years later after they have been composed—if they’re published at all—as the childhood works of a famous person.
Glassine paper is a smooth, translucent, and glossy paper that is resistant to air, water, and grease. Traditionally, it is used to store drawings, maps, watercolors, etchings, or prints.