She returned in 1893 and 1895 and published her observations of stellar spectra in an important catalogue of classifications in 1897. "Spectra of Bright Stars Photographed with the 11-inch Draper Telescope as Part of the Henry Draper Memorial and Discussed by Antonia C. Maury under the direction of Edward Charles Pickering" (1897) presented the results of Maury's examination of 4,800 stellar photographs, using her own system of classification, and analyzed 681 bright northern stars in detail. It was the first observatory publication to have a woman's name in the title.