The files of attorney Jens Chr. Gundersen dating from 1906 until 1927 are important sources of early Norwegian Film and Cinema History. The archive comprises 73 protocols and 17,674 documents about the silent film era in Norway. Gundersen owned many cinemas, importing and distributing films in the period before local municipalities took over ownership of most cinemas in Norway. The archive has been little used, but in the research programme SiFTi at Lillehammer University College an attempt has been made to introduce a system that will render the files more accessible. The hope is that in this way they will be more open to future film historians to deepen, find nuances and new perspectives, and to emphasize what is written about early Norwegian film history. The last part of the article is about Gundersen´s privately owned cinemas before Oslo municipality took over.