In Themis: A Study of the Social Origins of Greek Religion, Jane Ellen Harrison says the name Anna Perenna is composed of two parts that relate to the Latin for year because she was a new year deity. Plebeians celebrated Anna Perenna and the new year, on the Ides of March, with a picnic, song, dance, and drink in the Campus Martius and in huts made of stakes and branches. Robert Palmer says this celebration was at the first milestone of the Via Flaminia, along the Tiber River.
- "Studies of the Northern Campus Martius in Ancient Rome," by Robert E. A. Palmer; Transactions of the American Philosophical Society, New Series, Vol. 80, No. 2 (1990), pp. i-vii+1-64