Check the listing for details. NRI Schools Liberty BASIC Text Book Set #5485-5491 Vintage Programming Lessons. Made in United States. Listed at 15.00 USD. The NRI Schools Liberty BASIC Manuals Set 5485-5491 is a vintage collection of programming guides that serves as a valuable resource for computer enthusiasts and vintage computing collectors. With a focus on retro technology and programming techniques, these manuals offer a unique glimpse into the early days of computing. The set provides detailed instructions and explanations to help users learn and navigate the complexities of Liberty BASIC programming, making it a sought-after item for those interested in exploring the history of computer education and software development. Complete liberty Basic module from a bigger NRI programming course. 1996 edition Clean in good condition from smoke free environment.