Location: Los Angeles County, California

Named by the USFS in 1890 for Oscar Lawler, a prominent Los Angeles attorney interested in conservation (active ca. 1890-1930). Name is incorrectly spelled on both the USFS maps and USGS topos. Oscar Lawler is cited in LA Reina, Los Angeles in Three Centuries a definitive booster publication of the Security Trust & Savings Bank (1929). According to Robinson, Don McLain stated that the name "Lawler" was suggested by Lloyd Austin of Switzer's Camp. He and Lawler were friends and he was grateful for his legal aid when his Switzer-land resort was threatened. In his youth, Lawler was an active hiker in the San Gabriels and had a lifelong fondness for them.

First known ascent of this peak was by the sons of John Brown, Owen and Jason (1887). They called it "Black Jack Peak" because of its summit outroppings of flinty porphyritic rock also known as "black spar". Early Pasadena historian Hiram Reid believed that the name didn't gain wide popularity because of memories of their father's bloody raid on Blackjack Kansas (1856).

Peak was also known as "Little Strawberry Peak".

Correctly called "Mt Lawler" on 1958 and 1962 HPS Peak Lists.

Name first appears on USFS Angeles National Forest map (1931).

Peak was on the original 1946 HPS Peak List. Weldon Heald climbed this peak in 1937.