Sprinkle yeast over warm water in a small bowl. In a large bowl pour scalded milk over 1/2c. of sugar, salt and shortening. Stir until shortening melts, and cool to lukewarm.
Into the lukewarm milk mixture, stir 1 c. flour and beaten eggs, then yeast and rolled oats. Next, stir in enough flour to make a soft dough. These steps can be done in a mixer with a dough hook.
Turn dough onto a board and knead for 10 min. Place in a greased bowl, and oil top of dough. Cover and let rise until doubled.
When doubled, punch down, and let rest covered, on board for 10 min.
In a small bowl, combine cinnamon and 1/3 cup of sugar.
Divide dough in 1/2. Roll one half into a 15" x 8" rectangle. Brush with 1/2 of melted butter and sprinkle with 1/2 of cinnamon mix. Roll up jelly roll fashion beginning with the 8" side.
Place seam down in greased 9" x 5" loaf pan. Repeat with other half of dough.
Cover bread and let rise until nearly double. Pre=heat over to 375º.
Bake loaves for 30 - 35 min.
Brush tops of warm bread with melted butter, and cool in pans on sides for 15 min. Remove from pans and cool on rack.