She is best known as author of Fire and Hearth[1] and as an advocate for the protection of Aboriginal art, particularly at Murujuga in Western Australia.
She transferred her studies from natural science to archeology and graduated in 1948, one of the first group of women who were awarded degrees.
[3] She then completed an extensive survey of rural settlements in East Anglia between the first and fourth centuries AD, published in 1970 as a Royal Geographical Society Memoir.
[4] Hallam moved to Perth in 1961, when her husband became lecturer in medieval history at the University of Western Australia (UWA).
[5] 'Fire and Hearth' Forty Years On, a book of essays by colleagues and former students, celebrating Hallam's work was published in 2011 by the Western Australian Museum.