There are some nice suggestions here, but not very many that aren't from the HSC online suggestions (which may be the syllabus suggestions, i haven't checked).
My prescribed texts are:
*Hersey
*Plath
*the Spy who came in from the cold
So far for related texts I have done
*Samuel Beckett's 'Endgame'
*James Gleeson's "The Citadel"
*Grave of the Fireflies
and plan to do
*1984 - yeah i know its overdone, but i just like it so much, and it doesn't hurt to have extra material up your sleeve which might suit the question on the day better than another text
*the Watchmen
* possibly also a McCarthy speech
Anyway, Endgame (or for that matter a great number of Beckett's works) is good, especially if you're not doing beckett for prescribed text, and Gleeson's "The Citadel" is good if you want a visual but you will have to work them out yourself since there isnt a lot of information on them in relation to After the Bomb.
Also, as you can see, I have a preference towards the more existential, absurdest, surrealist genre's so if anyone has other texts that work well with those, let me know. I usually tie my texts together with a Personal&Political Ramifications (of the atomic age) approach.
Oh and also, I was thinking about whether Akira (1988) or Hayao Miyazaki's "Nausicaa of the Valley of the Winds" (1984) would make good related texts, which both have strong post-apocalyptic or dystopian and anti-war themes - relate well to Hersey's Hiroshima as a post bomb Japanese perspective. If anyone knows them and/or has done them, what are your thoughts