Dissolve yeast in warm water. Combine sugar, oil, salt and boiling water.
Stir to dissolve sugar. Add 3/4 cup cold water.
When mixture is lukewarm, stir in the dissolved yeast.
Mix flours together reserving 1/2 cup white flour to add while kneading.
Add flours gradually to form a stiff dough.
Turn out on a lightly floured board and knead until dough is smooth and elastic(about 7 to 10 minutes).
Place in oiled bowl, turn and cover.
Let rise in a warm place (85 °F to 90 °F) until light and double in bulk for about two hours.
Punch down. Divide into half; shape into loaves and place in greased loaf pans.
Cover and let rise in a warm place until nearly double (about 30 minutes).
Bake at 350 °F for from 50 to 60 minutes. Remove from pans immediately and brush with oil.
Let cool on rack. Yield: 2 loaves.