1930's Swagger Jigsaw
InstructionsTo change the number of pieces (difficulty) push on the grid button
To change the number of pieces (difficulty) push on the grid button 
before starting the puzzle and select the desired number of pieces.
1930's Swagger Jigsaw. Living Histories, accessed 22/09/2023, https://livinghistories.newcastle.edu.au/nodes/view/104905