A librarian at the Bodleian Library at the University of Oxford, she was the winner of the British Academy's Rose Mary Crawshay Prize in 1966.
at Somerville, during which time she also taught and began work on the indexing of English poetry in the manuscript collection of the Bodleian Library.
[5] She was responsible for tracing the provenance of James Sherard's musical collection in the library, publishing a short article and lecturing on the subject at Oxford in 1982.
[6] Crum's magnum opus, First-line index of English poetry, 1500-1800, in manuscripts of the Bodleian Library, Oxford, was published in two large volumes in 1969.
[5] The latter was considered an indispensable reference work, appreciated for its careful identification of several sketches and previously unfamiliar pieces by the composer.