There's a Henry Darger exhibition at the Folk Art Museum in NYC through mid-September. There is also an exhibition at Intuit in Chicago on view through June 28. The Intuit has a recreation of Darger's apartment. You can see images here. You can find vignette images of his Chicago apartment before it was demolished at the Tate Museum website.
The entire 2004 documentary by Jessica Yu titled "In The Realms of the Unreal" about the writer and artist is available on you tube in 12 segments. The first three are above.
Who's to say what's real and unreal?