Complex sentence: In Cheyenne, Howard produced his first photographs of the expedition, including a vew of Cheyenne Depot where army supplies were unloaded from rail cars and shipped overland to military posts throughout Wyoming.
Split into simpler sentences: In Cheyenne, Howard produced his first photographs of the expedition, including a view of the Cheyenne Army Depot. From this collection of warehouses, army supplies were unloaded from rail cars and shipped overland to military posts throughout Wyoming.