On the matter of Juvenile Theatres, I borrow from the text of 'Toys through the Ages'. The succinct description of this detailed and delightful toy cannot be bettered:
"The Juvenile Theatre consisted of a complete theatre in miniature including the stage, sets, actors and script for the play. A painstaking method of engraving was used to produce the printed sheets, which were sold in two sizes and at two prices: Penny plain and twpence colored. The scripts were condensed versions of famous plays. Artists visited theatres to make sketches of scenery and costumes. The characters in the plays were always depicted in very dramatic poses. Wire slides were used to push the characters on and off the stage.

Juvenile Theatre was created in the early 19th century when the public at large had a pssion for melodramatic theatre. ... By the turn of the century, theatres were producing souvenir prints with several small figures of actors in a given play on each sheet.

J. K. Green claimed to have published the first Juvenile Theatre prints in England in 1808. His great rival publisher, William West, published some twelve plays in 1811. Thereafter, West published a juvenile version of pratically every play running in London..."