Old Marmalade Recipe from 1960’s

Going to start this tomorrow it takes 3 days to make.
I was talking to my daughter and saying that I can’t find a nice Marmalade and that when you look on the label you find all these added things ~~~~~~~ Marmalade needs 4 things. Time. Fruit.Sugar.Water.. that’s it. So I have dug out my old book and found it. And of course you need Seville Oranges that you only get in January yay something holds true. And I have some from greengrocer not found in supermarkets I think.