The growth of tourism in the early 19th century led to the formation of the "Compagnie des Guides de Chamonix" in 1821, to regulate access to the mountain slopes (which were communally or co-operatively owned), and this association held a monopoly of guiding from the town until it was broken by French government action in 1892; thereafter guides were required to hold a diploma issued by a commission dominated by civil servants and members of the French Alpine Club rather than local residents.