Complex sentence: Another Clark trip with Radford to Washington, D.C. in the fall of 1828 included an excursion to visit stepbrother Meriwether Lewis Clark at West Point but they turned back due to ice floes on the Hudson River.
Split into simpler sentences: Another Clark trip to Washington, D.C. with Radford began in the fall of 1828 and included an excursion to visit stepbrother Meriwether Lewis Clark at West Point. They were turned back due to ice floes on the Hudson River.