Put boiling water, oats, molasses, shortening, sugar, and salt into a large bowl; stir to blend.
Cool to lukewarm.
Soften yeast in the warm water.
Add to lukewarm mixture in bowl.
Add the eggs, one at a time, beating well after each addition.
Add about half of the flour, 1/2 cup at a time, beating vigorously after each addition.
Beat in the raisins and remaining flour.
(Dough will be quite soft.) Turn dough into a greased deep bowl and grease top of dough.
Cover; let rise in a warm place until doubled.
Beat down dough with spoon and divide into halves.
Spread each half evenly in a greased 9x5x3-inch loaf pan.
Cover; let rise again until doubled, about 1 hour.
Bake at 350°F about 40 minutes.
Remove pans to wire racks, brush tops with melted butter, and cool 10 minutes in pans before removing to racks.