* In the 18th century, French explorer Jean-Baptiste de La Salle visited the area.
* In the 19th century, American explorers Josiah Gregg and Kit Carson visited the area.
* In 1925, the Carlsbad Caverns were discovered by Jim White and his two sons, Ray and Boyd.
* In 1930, Carlsbad Caverns National Park was established.
* In 1929, the first tourists visited the Carlsbad Caverns.
* In 1932, the park's first superintendent, R.W. "Dick" Cary, was appointed.
* In 1934, the Civilian Conservation Corps (CCC) began work on developing the park.
* In 1936, the park was officially opened to the public.
* In 1942, the park was closed to the public due to World War II.
* In 1945, the park was reopened to the public.
* In 1950, Carlsbad Caverns National Park became a UNESCO World Heritage Site.