The National Film Archive of India yesterday acquired 1,790 songbooks of Hindi films belonging to every decade of the country's cinematic heritage. <br/><br/>AIR correspondent reports that Songbooks starting from 1934 to 2012 acquired by NFAI represent the journey of Hindi film industry in the country. These booklets give a peek into a long forgotten era and are also an indicator of changing printing technology as did the artwork.<br/><br/>It is notable that these songbooks contain not only the full lyrics of songs in multiple languages, but are also a treasure trove of information about the film itself, including the cast, credits and storyline.<br/><br/>NFAI has appealed to the public to come forward with rare, archival material that will help in conserving India's heritage, under the umbrella project of National Film Heritage Mission.