[citation needed] Lamon appeared in more than 30 short silent films between 1911 and 1918, including The Scandal Mongers (1911), Unmerited Shame (1912), It Pays to be Kind (1912), The Legend of Sleepy Hollow (1912), Saved from the Titanic (1912), The Holy City (1912), A Double Misunderstanding (1912), That Loving Man (1912), Wanted a Wife in a Hurry (1912), Robin Hood (1912),[2] Dolls (1912), The Passing Parade (1912), The Lucky Loser (1912), A Choice by Accident (1912), Caprice of Fortune (1912), Making Uncle Jealous (1912), Just Out of College (1913), It Might Have Been (1913), Quarantined (1913), What's In a Name?

(1913), Keeping Up Appearances (1913), The Miser (1913), The Higher Duty (1913), The Supreme Sacrifice (1913), Jane's Waterloo (1913), For His Child's Sake (1913), Diamond Cut Diamond (1913), Through Many Trials (1913), Longing for Mother (1913), Violet Dare, Detective (1913), A Father's Love (1913), The Other Woman (1913), Dick's Turning (1913), The Wager (1913), The Strange Way (1913), The Exile (1913),[3] The Matinee Girl (1918),[4] The Face in the Dark (1918), and Little Women (1918).

On stage, Lamon appeared in Broadway productions including Sam Houston (1906), when she was a child,[5] Forever After (1918-1919),[6] The Advertising of Kate (1922), Aren't We All?

(1924-1925),[7] Love in the Tropics (1927), Gambling (1929), The Tavern (1930), The Song and Dance Man (1930),[8] Just to Remind You (1931),[9] and A Hat, A Coat, A Glove (1934).

[13] Isabel Lamon married songwriter and playwright William M. Hough; they had one child, Carol.