Cook bacon until crisp and drain, then break into 1/2-inch pieces. Set aside. Beat together the butter and sugar until fluffy. Beat in egg. Combine flour and soda and stir into butter mixture. Stir in bacon, rolled oats and raisins. Drop rounded tablespoons of dough onto an ungreased baking sheet. Place them 2 inches apart. Bake 350° for 15-18 minutes. Cool 1 minute and remove from sheets.