Preheat oven to 350°F with the rack in the lower third. Spray a 9 by 5-inch loaf pan with nonstick baking spray. In a medium mixing bowl, whisk together the dry ingredients (flour, salt, baking soda, spices).
In a large mixing bowl, whisk together the rest of the ingredients (eggs, sugar, pumpkin, melted butter, milk).
Gently fold the dry ingredients into the wet ingredients until just combined, being careful not to overmix.
Pour the batter into the prepared loaf pan.
Bake until a toothpick inserted into the center comes out clean with only a few moist crumbs on it, about 60 minutes. A thermometer inserted into the middle should reach 200°F. Cover loosely with a piece of aluminum foil if it begins to brown too quickly.
Remove the bread from the oven and cool for 10 minutes. Remove the loaf from the pan and cool to room temperature on a cooling rack.