Preheat the oven to 350 degrees. Cream the butter and gradually add the sugar, beating well. Add the eggs, one at a time, beating well after each addition.
Combine the next seven ingredients and add to the creamed mixture alternately with the pumpkin, beginning and ending with the flour mixture. Stir in the vanilla, raisins and nuts. Spoon the mixture into four greased and lightly floured one-pound coffee cans. Bake for one hour or until a wooden pick inserted in the center comes out clean.
Cool in the cans for 10 minutes, then remove from the cans and cool completely on wire racks.
Yield: 4 loaves