I just read "Heaven is for Real" by Todd Burpo. It's pretty good. It's about a pastor's child who got really sick and ended up in the hospital in surgery. He talks about having seen family members and Jesus and talking to them. His family would often point at paintings and other renderings of Jesus' portrait, however, he always said that they did not look like Him. Then one day, they came accross a painting that a little girl painted, who claimed to have seen Jesus, and little boy said that her painting was what Jesus looks like. There's a picture of the painting in the book.