By 1916, Egan's acting career appears to have ended, and she no longer was being mentioned in major trade journals or included in published studio personnel directories as a regularly employed actor.

[4][5] By 1910, the large Egan family was living at 425 West 30th Street in Manhattan and was supported by Thomas's job as a "letter carrier" for the United States Postal Service.

In October and early November 1907, credited as Gladys Eagan, she portrayed the character "Ne-Ne-Moo-Sha" in the two-act musical comedy Miss Pocahontas, which was presented at the Lyric Theatre on 42nd Street in Manhattan.

[8] In its November 23, 1907 issue, the weekly entertainment newspaper The New York Clipper lists Egan as a cast member in the Samuel S. & Lee Shubert Company's presentation of the play Shore Acres, which was scheduled for a three-week engagement in Boston.

Throughout 1908 and into early 1909, Egan performed on tour in additional presentations of Shore Acres and in at least two other plays: Rip Van Winkle starring the popular New York actor Thomas Jefferson and The Wishing Ring featuring Marguerite Clark.

[13]In other news coverage about Egan's stage work in 1909, The Salt Lake Herald in Utah described the "little" actress as "one of the stars of the performance" of Rip Van Winkle and judged her acting style as highly effective for her age.

She is not listed as a cast member of that production in any of the previously noted sources or in the catalog profiles of surviving copies of the short preserved in the UCLA Film Archives and the Library of Congress.

A few examples of Egan's films are Behind the Scenes (1908), Romance of a Jewess (1908), After Many Years (1908), The Lonely Villa (1909), The Country Doctor (1909), The Seventh Day (1909), The Rocky Road (1910), The Broken Doll (1910), His Trust Fulfilled (1911), Conscience (1911), A Child's Remorse (1912), The Painted Lady (1912), Fate (1913), and Red and Pete, Partners (1913).

[22] By the end of 1913, she had performed in at least 100 Biograph releases working for Griffith as well as for some of the company's other rising directors such as Herbert Brenon, Frank Powell, Anthony O'Sullivan, Edward Dillon, and Mack Sennett.

[25] Their casting in subsequent Biograph films, as well as their rising popularity with theater audiences, may account, at least in part, for Egan's declining number of roles in company productions.

"[26] That news item also informs filmgoers that for the price of ten cents they can purchase a poster from the company that features the names and photographs of 26 of Biograph's principal actors.

[27] In the latter film, once again credited as "Gladys Eagan", she was among a cast described as a "Clever Company of Well Known Stage Children", a group that included Runa Hodges, who was billed as "The Prettiest Baby in the World".

[28] The Independent Moving Pictures Company of America, more commonly referred to by the acronym "IMP", also cast Egan in four of it releases in 1912: The Romance of an Old Maid; Mrs. Matthews, Dressmaker; All for Her; and The Heart of a Gypsy.

The next year, at PDC, she portrayed the character Mary Morgan in Ten Nights in a Barroom, a drama directed by Lee Beggs and based on an 1854 temperance novel by Timothy Shay Arthur.

[31] According to a few of her filmographies, after her work for other studios in 1912 and 1913, Egan returned to Biograph to perform in a minor role, again uncredited, in the company's 1914 three-reeler Men and Women co-starring Lionel Barrymore and Blanche Sweet.

Nevertheless, in a film-industry directory published in Motion Picture News in October 1916, she still promoted herself in personal advertisements as a specialist in "Ingenue" roles and that she was available for hire through the Amalgamated Photoplay Service of New York City.

[33] Following the 1916 publication of her personal advertisement seeking acting work, Egan is not mentioned again in available trade journals of the period or in theatre and film sections in local or regional newspapers.

[d] The federal decennial census of 1930, in a population survey taken on April 23 at the Wells House, a hotel in Brooklyn, New York, documents a 29-year-old, divorced Gladys M. Eagan residing there with 13 other "guests" and employed as an office secretary.