This section is from the book "Canning, Preserving Pickling and Fruit Desserts", by Jeanette C. Van Duyn. Also available from Amazon: Canning, Preserving, Pickling And Fruit Desserts.
Pare, core, and quarter the quinces, or they may be cut into rings. Drop them at once into cold water, into which a little lemon juice has been squeezed, which will prevent them from discolouring, otherwise use slightly salt water. Save the parings, core, and seeds for jelly. Cook quinces in boiling water for 5 minutes, then drain or pack them into clean jars, fill up with syrup, and sterilise the same way as Canned Apples.
A delicious way of doing quinces is by stewing them beforehand, in the same way as "Canned Stewed Peaches," and sterilising them the same way. It makes a nice change from the usual canned quinces.
 
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