Scenes of Eternity
This is actually two books in one. The first book was originally published in the 1890's and is about a woman who had an extended visit to heaven. The second book was originally published in 1856, and it is about a teenage girl who died and saw heaven and hell as a non-believer -- and became a believer as a result. While we cannot attest to the veracity of these experiences, they both exalt Christ and the Bible.