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This is from the Providence Journal Bulletin by Richard Benjamin-the clipping is yellowed and I think it's well over 20 years. I've made them quite a few times and they are delicious.
The official Jordan Marsh Blueberry Muffin Recipe
1/2 cup shortening (see note)
Note: shortening may be all vegetable solid, all butter, all magarine, or a 50/50 blend.
Preheat oven to 450 degrees. Clean and rinse blueberries. Grease muffin pan and lightly flour it. Grease the top of the pan too as muffins will peak and cause a mushroom effect on top.
Beat shortening with sugar and vanilla until well mixed. Beat in eggs. Mix dry ingredients and mix in alternately with the milk. Fold in blueberries. Batter will be very heavy.
Fill muffin cups to top. Bake at 450 degrees for 5 minutes. Lower heat to 375 degrees and bak an additional 30 to 35 minutes until golden. Cool and remove from pans
Makes one dozen.