This section is from the book "The Gardener V1", by William Thomson. Also available from Amazon: The New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener.
Sow the Peas you name at once. They should be sown about the middle of May to come in by the 1st of September in ordinary seasons. We are rather at a loss to know how to answer your other question, because you do not state whether the collections are required for spring or late in summer. Presuming that it is about the month of August, we should say for six - Peas, French Beans, Cauliflower, Potatoes, Carrots, Onions; for ten, add to these Vegetable Marrow, Celery, Spinach, and Turnips. These are all fkst-class vegetables, and the most generally useful.