Source google image: http://www.imaging4dev.co.nz/images/category_11/Kids%20toys%20Vintage%201950s%20The%20Cornell%20Crossword%20Puzzle%20Plastic%20Sliding%20Tile%20Puzzle%20Pocket%20Word%20Puzzle%20LRIBROHLQM_2.jpg
Sliding tile puzzle
Source google image: http://www.imaging4dev.co.nz/images/category_11/Kids%20toys%20Vintage%201950s%20The%20Cornell%20Crossword%20Puzzle%20Plastic%20Sliding%20Tile%20Puzzle%20Pocket%20Word%20Puzzle%20LRIBROHLQM_2.jpg