The three most important studies of Caesarian propaganda are Barwick (1951), Rambaud (1953), and Collins (1972); none is without problems. Collins (1963) provides an informed review of the previous literature, Riggsby (2006, 207–15) an up-to-date discussion of “propaganda” in Caesar, and Kolb (2003) a survey of ways to communicate with the public. Crawford (1974, vol. 2.734–8) discusses Caesarian coinage, Gros (2010) Caesar’s architectural designs, and Zanker (2009) Caesarian portraiture.
The study of the varying and changing terminology in Caesarian scholarship on propaganda (fides, Glaubwürdigkeit, tendenza) may yield interesting results. Further desiderata include studies of Caesar’s propagandistic efforts in comparison (and partial response) to Pompey’s and of the continuators’ (cruder) propaganda in the Corpus Caesarianum.