Her first major work , Irish art in the early Christian period , was published in 1940 .
Her first major work , Irish art in the early Christian period , was focused on an area of study largely untouched since Margaret Stokes in the 1800s .
Her first major work , Irish art in the early Christian period , was published in 1940 , and focused on an area of study largely untouched since Margaret Stokes in the 1800s .