The Overstory Previous Editions--Free Email Tropical Agroforestry Journal. Overstory Online #18 Designing Resource Systems. The Overstory #7 -- Agroforestry. The Overstory #44--Integrated Systems Approach. The Overstory #69--Some Tree Basics. The Overstory #80 -- Forests and Water. High Density Fruit Tree Growing.