1929, November 11—Establishment of commercial air service between the islands.
1930—First permanent park position (ranger) was established to give continuous service at Haleakala.
1931—First permanent park naturalist was appointed for Hawaii National Park, although temporary, summer interpretive services were started in the late twenties by the employment of Otto Degener, formerly botanist at the University of Hawaii. Dr. Degener, presently writing Book 6 of his “Flora Hawaiiensis,” kindly supplied many of the scientific plant names for this guide.
1935 February 23—Dedication ceremonies of Haleakala Road in Hawaii National Park.
1937—Kapalaoa, Paliku, and Holua cabins were constructed.
1941—Haleakala closed to travel for military reasons.
1952-3—Present exhibits were installed in Summit Observation Station.
1958—Permanent naturalist position established for Haleakala.
1959—Hawaii becomes the 50th state in the Union.