I've been learning that people don't know about this event in American history. It was a significant event, and it's easy to study thanks to extensive documentation and tireless efforts of activists to uncover the information. Links after the jump.
The Internment experience is central to Japanese-American history, so much so that it eclipses all others, and is even definitive of the Japanese-American identity. Additionally, it's taught in the schools, at least in California, and is fairly well known. Partly, this is because so many local landmarks, like racetracks and churches, still extant, were used in the process of forced relocation. So, there is architectural evidence of the internment in our midst. Additionally, there are events and news stories that reference the internment. It's always surprising to learn that in other states, this information is largely unknown.
This page links out to a dozen resources about the internment, in no particular order.
Darkchilde's links page.
Nisei on Wikipedia.
Discover Nikkei JA history site by JANM.
Sites of Shame by Densho.
Ansel Adams photos, and Dorothea Lange photos. (The Adams photos are from a book that was propaganda to re-integrate JAs into the country. The Lange photos were not used because they were considered too controversial, because they were realistic and honest.)
Internment history unit at Calisphere.
Henry Sugimoto collection.
Fran Chin Blog. Chin is Chinese American but he was active in seeking redress, and has been a researcher of the Internment, uncovering truths that aren't easily confronted.
Days of Waiting, and Stand Up for Justice, the Ralph Lazo Story.
Citizen 13660 by Mine Okubo, illustrator and writer.
Map of the camps: