Elsmere Canyon Fires
There were apparently three major fires that burned almost all of Elsmere Canyon since 1900. The first was the Ravenna Fire of 1919 which burned approximately 75,000 acres. The second was the Newhall Fire of 1962 which burned about 8800 acres. Finally, there was the 2004 Foothill Fire.
Here are the main fires since 2000:
2004 Foothill Fire
2008 Sayre Fire