Thanks Ernest, I only heard the song a couple of times, so coudn't be sure that there were extra verses. Now I've read the ones that you directed me to, that's the version I heard.
Informative link about the history of Manzanar as well. With the internet not being regulated / edited, I have read a few different versions of events at Manzanar. Some talk of voluntary incarceration, some talk as though a few Japanese simply decided to set up their own ghetto in the desert which they were free to leave at any time. A shameful and sorrowful period nonetheless.