Pollard came to Dublin in 1957 to take up two part time positions, one at
Marsh's Library and the Library of Trinity College Dublin. Marsh's Library could not pay her a full salary, instead provided her with a flat under the library, which was notoriously cold, where she lived for the rest of her life. She kept these two jobs for 8 years, until she took up a full time post at Trinity. Throughout her career her specialism was in early printed books, becoming the designated rare book librarian at Trinity in 1964. Her research and dissertation for the fellowship of the Library Association was titled
The woodcut ornament stocks of the Dublin printers 1551–1700 with lists of unsigned works identified as from their presses for which she received distinction. and
A dictionary of members of the Dublin book trade, 1550–1800 (2000). The first volume was based on her research as
Lyell Lecturer in Bibliography at the
University of Oxford in 1986-1987. In the early 1960s, Pollard established her own hand press in a disused room in Marsh's Library with the help of Liam Miller. Over the course of 20 years, she published very limited editions of prose squibs and verse satires on contemporary events. ==Later life and legacy==