The only two known images of Johnson were unearthed in recent decades. For years, people worshipped him without even knowing what he looked like. As a result, the existing images are very, very valuable. This one gives a great view of his famously long fingers.
This is the only photo we have of him that shows his full body. Scholars believe he must have borrowed the suit he's wearing, since he probably wouldn't have been able to afford it on his own.
This picture, which may be a photo of Robert Johnson with Johnny Shines, was "discovered" by a guitar salesperson and sold to the Johnson estate in 2005. However, since Johnny Shines has passed away and others who knew him couldn't confirm that it was Robert, the photo's authenticity has been unconfirmed and hotly debated.