Since its organization in 1982, the Friends of the Lewiston Public Library have supported the library through advocacy and fundraising efforts. The group was founded to "promote understanding and appreciation of the functions, the materials and services offered by the library". The Friends primarily raise funds through their used book sales for expansion and improvement of the services offered to the Lewiston community by the library. The Friends support and assist the library by sponsoring both adult and children's programs throughout the year.