It was the first time in recorded history that a mountain of such height (4,302 m/14,115 feet) had been scaled in North America. (In South America, Alexander von Humboldt reached ca. 5,800 m (19,000 ft) on Mt. Chimborazo in 1802.) In a commemoration 100 years later, the day was considered as undoubtedly the most notable day of the expedition for botanical collecting by George Everett Osterhout, a prominent Colorado botanist.