The Canadian Warplane Heritage Museum just outside Hamilton, Ontario is full of wonderful planes and history. What makes the museum exceptional is the volunteers working there. I believe that most of them have been involved in aviation in their 'work lives' and they are so helpful and friendly. One of them pointed out this penny in the engine of a North American Harvard (1951) - apparently the mechanics would use a penny as a gasket to record the date of the last maintenance.
From Around Here