The materials and procedures of the 19th-century lithographer are duplicated in almost every respect by the contemporary hand printer. An image is drawn with tusche (a carbon pigment in liquid form) and litho crayon before the printing surface is fixed, moistened, and inked in preparation for printing. The printing itself is done on a press that exerts a sliding or scraping pressure.
The dream about keys is a dream that refers to solutions to one's life problems. The question you have to ask yourself when you have this type of dream is 'what is the problem I have today that needs a solution, or a key? (read all at source)
What does it mean to dream of Monkey? 1. Dreaming that monkey bites you, means you'll steal an idea that can bring a lot of money. 2. Dreaming of a monkey with a very long tail, suggests that you will have difficulties with the authorities or with your superiors. 3. Dreaming you see a monkey in a cage, means you are in need of independence and freedom. 4. Dreaming you see climbing monkeys, suggests you will have difficult progress.