[2] In the mid 1920s, Seabrook portrayed Mary Margaret in the play The Fool, which toured the United States for 62 weeks after having been presented "for some time in New York.

"[3] She appeared in the Broadway productions of Crime Marches On (1935)[4] and Three Men on a Horse (1942).

A newspaper article about the upcoming production described Treacy and Seabrook as "two of the best known portrayors of youthful roles in the country.

"[6] Seabrook also appeared as the ditzy mother of Spanky McFarland in the Our Gang short films Bedtime Worries and Wild Poses.

[7] On radio, Seabrook played Susabelle on The Park Avenue Penners[8] and was a member of the cast of Meet Mr.