At Eastman, Watanabe began preparing for her Ph.D. in musicology with advisor
Charles Warren Fox. A month later, Watanabe's father died. She returned to Granada to arrange her father's funeral, but she was unable receive permission to leave the camp to retrieve her father's ashes until the camp's educational director arranged an educational "mission" by having her address a seminar at the University of Denver. Her family's assets were still frozen, and due to the expenses of this trip, Watanabe was broke. She was hired by librarian Barbara Duncan for her first job in a library as a "fetch-it" girl retrieving materials in the
Sibley Music Library for 35 cents an hour. She later said "I never knew that a library could be so much fun," having disliked previous quiet and staid libraries she was familiar with. By 1944 she had a full-time job as head of
circulation, whose responsibilities included "answering 'real'
reference questions, keeping an eye on
rare books, tabulating statistics...and supervising the annual inventory." In 1946, she joined the faculty at Eastman, teaching music history. When her mother was released from Camp Amache, she lived with Watanabe in Rochester, who became her sole means of support. In need of money, she decided to abandon library work for teaching. Instead, Hanson appointed her acting librarian to replace Duncan, and permanent librarian the following year. Hanson had frequently clashed with Duncan and preferred a librarian with Watanabe's background in music performance. During Watanabe's early years of leadership of the Sibley Library, she faced some awkwardness, as Duncan remained on staff for five years until her retirement and refused to speak to Watanabe. She also struggled to find time to finish her PhD dissertation, "Five
Italian Madrigal Books of the Late 16th Century: A Transcription and Study of the First Books a cinque by
Antonio il Verso, Bartolomeo Roy,
Bernardino Scaramella,
Pietro Paolo Quartieri, and
Emilio Virgelli," but persisted with the help of a fellowship from the
American Association of University Women (AAUW) and the assistance of Dr.
Alfred Einstein, who proofread 400 pages of her transcriptions of
Italian madrigals for no charge. She graduated with her PhD in 1952, shortly before her mother's death in January 1953. During her 38 years as head of the Sibley Library, she built the collection from 55 thousand to over 250 thousand items, including many rare late 18th and 19th century materials purchased in book buying trips to Europe. She was active in the education of music librarians, teaching at the library school at
SUNY Geneseo until the program closed, then teaching her own summer institutes in music librarianship. She also authored a textbook,
Introduction to Music Research (1967). She served as president of the
Music Library Association from 1979 to 1981. She retired as head of the Sibley Library in 1984, but remained as the school's archivist for many years and assisted her successor in the transfer of the library to a new building. == Death and legacy ==