In the decades following the Revolution, Rockland became popular for its stone and bricks. Many buildings in New York City were built with bricks made in Rockland. These products, however, required quarrying in land that many later believed should be set aside as a preserve. Many unsuccessful efforts were made to turn much of the Hudson Highlands on the northern tip of the county into a forest preserve. Union Pacific Railroad president E. H. Harriman, though, donated land and large sums of money for the purchase of properties in the area of Bear Mountain. Bear Mountain/Harriman State Park became a reality in 1910 when Harriman's widow donated his lands to the state, and by 1914, more than an estimated one million people a year were coming to the park. After World War I, Rockland County became the most important sausage-making hub in New York.