Through her involvement in civic groups, Allen became a strong advocate for the Pomo people. She participated in several Pomo and Hintil women's clubs, which aimed to promote education, advocate for Indigenous rights, and preserve cultural practices within their communities. These clubs offered scholarships, and Allen contributed to their funding by making and selling baskets. In May 1942, eleven-year-old Marceline Allen, a Pomo girl, was ordered to move to a balcony section at the State Theater in
Ukiah, California, solely because she was Native American. Marceline's mother filed a discrimination lawsuit,
Marceline Allen vs. the State Theater, seeking $1,000 in damages. This lawsuit was financially supported by the Pomo Mothers Club, in which Elsie Allen and her mother, Anne Burke, were active members. Eventually, the case was settled out of court, with the theater agreeing to pay a penalty and change its discriminatory practices. This victory compelled many local businesses to also end their blatant discrimination against Indian people. In the 1970s, the
US Army Corps of Engineers (USACE) planned the Warm Spring Dam and
Lake Sonoma in Northern Sonoma County to reduce flooding on vineyard properties. The construction of the dam presented a serious threat to the cultural sites and ancestral villages of the Makahmo and Mahilakawna Pomo tribes, as well as to locations where materials like sedge, used in traditional basket-making, were gathered. The Native American Advisory Committee for the Warm Springs Cultural Resources Study was formed to work with archaeologists, historians, linguists, and botanists to assess the cultural impact of the dam's construction. The committee, which included Allen and other prominent basket weavers such as Mabel McKay, Lucy Smith, and Laura Somersal, documented the history of the Makahmo and Mahilakawna Pomo. Allen continued this Pomo tradition of female leadership. She addressed issues affecting women and worked to improve the lives of her community and Native Americans across the United States while also preserving Pomo basket-making traditions. Due to her lifelong dedication, Allen became recognized as a cultural scholar, earning her the nickname "the Pomo Sage" and an honorary Doctor of Divinity degree. ==Basketry==