While Plumlee was working as a
caseworker for the
welfare department of
Clackamas County, a female police officer encouraged her to take a
civil service test. She passed the test, and was selected from a pool of 300 applicants to fill the Portland Police Bureau's only open position. and did not wear uniforms. Their work focused on crimes like
child abuse,
domestic violence, and
rape. Records show that she also participated in
undercover investigations, including an anti-homosexual campaign organized by
Mayor of Portland Dorothy McCullough Lee. In 1949, the Women's Protective Division sent Plumlee and Edna Trout to Music Hall, which was known at the time for catering to gay men and lesbians, with the intention to "apprehend lesbians who might approach them and solicit attentions". Plumlee also helped educate women on how to avoid victimization. In a 1955 article by
The Oregonian called "Pickpockets Beware", she was photographed illustrating how a woman might be susceptible to
pickpocketing by opening her billfold in public. In 1957, the paper published a photograph of Plumlee and five other women at a shooting range, with the caption: "Feminine pistol team makes good showing in contest with all-male team from North precinct as interdivisional tournament gets under way". In 1959, two brothers were charged with disorderly conduct and destroying city property after tearing the speaker system from a police car occupied by Plumlee and another female officer. Plumlee also participated in civic events such as luncheons. At a 1964 Portland Yacht Club luncheon called "Women with the Badge", she told female attendees how they should protect themselves and their children. In 1967, she presented slides depicting dangers to women on urban streets to the Women's Council of the Portland Board of Realtors at the
Hoyt Hotel. Plumlee later said of the unit: "In some ways, the old Women's Protective Division was archaic, but on balance we did a lot of good." She is recognized as a pioneer in the largely male-dominated ==Later life, writing, and other interests==