She and her siblings Hall, Eliza, and Ella were raised in their mother's family mansion, now known as the Park-McCullough Historic House.
The latter, which was about the effect of murder on families living on the fringes of Dublin in the 1880s, was praised by critics as a masterpiece of suspense.
[2][3] Her largest project was As I Pass, O Manhattan (1956), a 1200-page anthology of writing about life in New York from its earliest days that encompassed some 200 authors and ranged from poetry to biography.
[2] Hailed as a "magnificent tribute to a mighty city",[2] this compendium of "literary New Yorkiana" is still being used by other writers.
[5][6] McCullough was also a musician and served for a time as director of the Vermont Symphony Orchestra.