I found this previously unknown website and a 'long read' on Rhodesia, which I have quickly skimmed through. Note the author appears to be sympathetic to the Rhodesian cause, but does include a first-hand witness to the situation faced by the mainly rural African population.
Link:https://www.psywar.org/content/rhodesia

The website's 'About Us' states:
PsyWar.Org is an archive of wartime aerial propaganda leaflets and research site for the history and techniques of psychological warfare, PSYOPS and information operations. The website which would become www.psywar.org was first launched in mid-1997 by Lee Richards. Since then the site has established a reputation for primary research in this field and has built a large following from professionals working in the information, influence and social science spheres, educators, war studies students and those with a general interest in military history and propaganda.