This section is from the book "Simple Italian Cookery", by Antonia Isola. Also available from Amazon: Simple Italian Cookery.
While one-half pound of spaghetti is boiling in salted water prepare the following: Take two ounces of tunny-fish and cut them into small pieces. Put them into a saucepan and fry them in their own oil. This oil is generally sufficient, but should it not be, add another tablespoon of olive-oil. When the tunny have been fried add a teaspoonful of chopped parsley and four tomatoes, peeled and the seeds removed, and a pinch of pepper. Let the tomatoes cook thoroughly. When they are cooked put the spaghetti into the saucepan and move them about with a fork and spoon until they are thoroughly mixed with the sauce and the tunny. Then serve.