I find this and other good harmonies of the Gospels helpful in understanding parallel passages and events in the life of Jesus. Every Bible student, pastor, preacher, and Bible teacher should have and use one.
This is a public domain work, and absolutely free of charge. The only changes I had made to the file are to add bookmarks for the different sections and chapters, and also to make the text recognizable for copy and paste functions. The pdf file is about 30mb.