Cicero, Rhetorica ad Herennium

Marcus Tullius Cicero, after whom Teuffel name...
Marcus Tullius Cicero (Photo credit: Wikipedia)

In addition to the Loeb Classical Library volumes noted as freely available online at Loebolus and Edonnelly, the Internet Archive has available Cicero’s Rhetorica ad Herennium (Loeb vol. 403) in a number of formats. Another HTML version is also available from the University of Chicago. Among the work’s other features, it contains a robust treatment of memory, which continues to have significance still today.