Over the next four decades Green edited 41 volumes starting with "Calendar of State Papers, Domestic Series, of the Reign of James I" (4 volumes, 1857–9). By the time she completed "Calendar of State Papers, Domestic Series, of the Reign of Elizabeth" in 1872, reviewers considered she had established a model for such work; with more detailed abstracts than many other calendars, as well as the highest standards of scholarship, her work "came to be recognized as the standard to be followed by all editors".