the Wright Flyer Park Ranger demonstrates wing warping on a reproduction of the 1902 Flyer at the Wright Brothers National Memorial (页面存档备份,存于互联网档案馆) Centennial
2014-04-04 [2020-08-26]. (原始内容存档于2019-06-23) (英语). Chiloquin and Chemult Ranger Districts. Big Bill - The Williamson River Basin Watershed Analysis (PDF)
(原始内容存档于2019-04-09). The original Power Rangers share memories of Yellow Ranger Thuy Trang, who died at age 27. [2024-03-26]. (原始内容存档于2019-06-21). Pete