The originals on these two images are glass transparencies. Magic lantern slides. The picture of coal being loaded on board the ship is labeled, "Dv N.Y. 6 Virginia, Norfolk. Loading Coal from Railroad onto Ocean Steamer (1927) Negative No. B13589" The one with the potatoes, "Dv N.Y. 36 Virginia, Norfolk. Schooner Loaded with Sweet Potatoes from North Carolina. (May 10, 1927) Negative No. B13590." Both are also labeled, "New York State Education Department Visual Instruction Division." Despite the numbers assigned, both are positives rather than negatives.