In a large mixing bowl, stir together the flour, baking soda, salt, baking powder and spices. Set aside.
In a separate mixing bowl, add the eggs, pumpkin, white sugar, dark brown sugar, oil, milk, molasses, fresh ginger and vanilla. Whisk just until it becomes one cohesive mixture.
Add a scoop of the dry ingredients to the wet ingredients and stir just until combined. Don't overmix. Repeat until all the dry ingredients are incorporated.
Pour the batter into greased loaf pans and bake in a 350-degree oven until a toothpick comes out clean from the center.