| Beginning.COBOL.for.Programmers.pdf | 17.5M | Apr 2014 |
| COBOL.for.Dummies.pdf | 129.6M | Jan 2026 |
| COBOL.from.Micro.to.Mainframe.3rd.Ed.pdf | 43.2M | Jan 2014 |
| Murachs.Mainframe.COBOL.pdf | 180.0M | Feb 2021 |
| Teach.Yourself.COBOL.in.21.Days.2nd.Ed.pdf | 3.1M | Oct 2012 |
| gnu.cobol.faq.3.0.412.pdf | 6.1M | May 2022 |
| gnu.cobol.programmers.guide.3.2.pdf | 2.2M | Nov 2025 |
| gnu.cobol.quick.reference.3.2.pdf | 0.3M | Nov 2025 |