Answer:
No. There is no book of 'Paul', as such, however there are 14 letters generally attributed to Paul in the Bible. Paul, as an 'overseer' and early 'apostle to the nations', traveled all around the Mediterranean Sea(Romans 15:19), preaching and teaching, and building-up the early Christian congregations. His 14 'books' were actually letters to the different congregations or to specific people, for correction, encouragement or direction in keeping the congregations unified, clean and busy. These included letters to the Romans (that is, the congregation in Rome(Romans 1:1+7), 1+2 Corinthians(two letters to the congregation in Corinth), etc...then to the Galatian, Ephesian, Philippian and Colossian congregations, then two letters to those in Thessalonica. He then writes two letters to his "fellow worker", Timothy, and one to a fellow Christian who had been with him on preaching tours, Titus (Titus 1:4+5). He wrote to Philemon, a fellow Christian, regarding Philemon's run-away servant, Onesimus, who had since learned the truth from Paul in prison, and become a Christian himself (Philemon 1-25) , and also he wrote the letter to the Hebrews in Jerusalem.