EPHEMERA has been included as most puzzle collections include related ephemera which, whilst not strictly puzzles, need to be classified as part of the collection.
There are examples of picture puzzles, word puzzles etc. which are on objects such as a plates, or are of such antiquity that the object deserves a place within any good collection of mechanical puzzles.
An example is the large sheet of riddles printed in London c.1840 from which these two examples are taken.
