His work, which probably began with the civil wars or the death of Caesar, was continued by the elder Pliny. The elder Pliny carried it down at least as far as the end of Nero's reign. Bassus' other historical work was a Bellum Germanicum, which was published before his Histories.
Seneca the Elder speaks highly of Bassus as an historian; however, the fragments preserved in that writer's Suasoriae (vi. 23) relating to the death of Cicero are characterized by an affected style.