First Series.
1. Black Oak.
2. White Pine.
3. American Elm.
4. Lombardy Poplar.
5. Tamarack.
6. Soft Maple.
8. White Birch.
Second Series.
1. Red Oak.
2. Silver Leaf Poplar.
3. Hickory.
4. Hard Maple.
5. Fir Balsam.
6. White Ash.
7. White Cedar.
8. Beech.
Third Series.
1. White Oak.
2. Black Walnut.
3. Horse Chestnut.
4. Basswood or Linden.
5. Black Ash.
6. Butternut.
7. Locust.
8. Bitternut Hickory.