M. Carey Thomas (1857-1935) became the first Dean and head of the English Department when Bryn Mawr College opened in 1884. Following the death of the college's first president, James Rhoads, in 1894, she was elected to succeed him in the position. She used her position to both expand the College, ensuring several new buildings were constructed on campus, and to influence college policies. Thomas was involved in the women's suffrage movement and an early promoter of adding a sex-based equal rights amendment to the U.S. Constitution. Although she was interested in rights for white, Anglo-Saxon women, Thomas's legacy of racism and antisemitism kept both Black and Jewish students out of Bryn Mawr even after she stepped down as president. This collection is comprised of documents from both Thomas's personal papers and the official records that survive from her time at Bryn Mawr College, including office subject files and a great deal of personal correspondence.