Some information about The Pilgrim's Progress
Bunyan wrote The Pilgrim's Progress in two parts, the first of which was published in London in 1678 and the second in 1684. He began the work in his first period of imprisonment, and probably finished it during the second. The earliest edition in which the two parts combined in one volume came in 1728. A third part falsely attributed to Bunyan appeared in 1693, and was reprinted as late as 1852. Its full title is The Pilgrim's Progress from This World to That Which Is to Come.
The Pilgrim's Progress is arguably one of the most widely known allegories ever written, and has been extensively translated. Protestant missionaries commonly translated it as the first thing after the Bible.