|Sister Elsie Peak|
|Elevation||5,075 ft (1,547 m) NAVD 88 |
|Prominence||1,794 ft (547 m) |
|Listing||Hundred Peaks Section |
Latitude and Longitude:
Sunland-Tujunga, Los Angeles,|
Los Angeles County,
|Parent range||San Gabriel Mountains|
|Topo map||USGS Condor Peak|
|Easiest route||Hike from Deukmejian Wilderness Park in Crescenta Highlands, Glendale |
It is in the Sunland-Tujunga community within the northeast corner of the city of Los Angeles, above the Crescenta Valley. The summit, at 5,075 feet (1,547 m) in elevation, is the highest point within the city limits.  The summit's elevation makes Los Angeles the largest city with the highest and lowest (sea level) elevation difference in the country. 
Because of its location, prominence, and proximity to Los Angeles, the summit is dotted with television, radio, and cellular transmission towers.  The mountain is also within the boundaries of the Angeles National Forest and Los Angeles County.
The mountain was named after Theodore Lukens, a former supervisor of the Angeles National Forest and later, the mayor of Pasadena, California.  Previously, the mountain was known as Sister Elsie Peak. It has been said that she was a Catholic nun who died while caring for the sick during a smallpox epidemic. On the USFS map of 1925, the mountain was shown as Mount Lukens and subtitled Sister Elsie Peak.  The identity of Sister Elsie (also referred to as Sister Else) is not certain and the stories surrounding her have not been verified. 
- "Sister Elsie". NGS data sheet. U.S. National Geodetic Survey. Retrieved 2014-03-05.
- "Mount Lukens, California". Peakbagger.com. Retrieved 2014-03-05.
- "Mount Lukens". Hundred Peaks Section List. Angeles Chapter, Sierra Club. Retrieved 2014-03-05.
- "Mount Lukens". Geographic Names Information System. United States Geological Survey. Retrieved 2014-03-05.
- "Mount Lukens". Local Hikes.com. Archived from the original on 2014-07-15. Retrieved 2014-03-05.
- "Elevations and Distances in the United States". U.S. Geological Survey. Archived from the original on 2013-08-03. Retrieved 2014-03-05. Note: Juneau, AK has a greater range.
- "Mount Lukens". Peakery.com. Archived from the original on 2014-03-10. Retrieved 2014-03-05.
- Derby, George (1891). The National cyclopaedia of American biography (ebook). 18. New York: J.T. White & Co. p. 282. OCLC 844617289.
- "Mount Lukens". SummitPost.org. Retrieved 2014-03-05.
- "Summit Signatures: Mount Lukens". Archived from the original on 2011-09-10. Retrieved 2011-09-14.
- "Station fire's effects still smolder". Glendale News-Press. Archived from the original on 2012-03-30. Retrieved 2014-03-05.