Yarmouth's "Third Falls" provided the perfect location for papermaking -- and, soon, for producing soda pulp for making paper. At the end of the 19th century and beginning of the 20th, Yarmouth was an international leader in soda pulp production.
George Henry Preble of Portland, nephew of Edward Preble who was known as the father of the U.S. Navy, temporarily lost his command during the Civil War when he was charged with failing to stop a Confederate ship from getting through the Union blockade at Mobile.
Street railways, whether horse-drawn or electric, required the building of trestles and tracks. The new form of transportation aided industry, workers, vacationers, and other travelers.