Eginhard's Vita Caroli Magni; Le Clerc's De la Bruyere, Histoire du
Regne de Charlemagne; Haureau's Charlemagne et son Cour; Gaillard's
Histoire de Charlemagne; Lorenz's Karls des Grossen. There is a
tolerably popular history of Charlemagne by James Bulfinch,
entitled "Legends of Charlemagne;" also a Life by James the
novelist. Henri Martin, Sismondi, and Michelet may be consulted;
also Hallam's Middle Ages, Milman's Latin Christianity, Gibbon's
Decline and Fall of the Roman Empire, Biographie Universelle, and
the Encyclopaedias.