Archive document : Manuscript Lyon, Fritz. – Video : an introduction to the state of art. – 1976. – 27 p. – Manuscript. – Included in the file entitled «Lyon, Fritz».
Archive document : Correspondence / Letter Lyon, Fritz. – [Lettre à l'Audio visual department, Buffalo University]. – Orono : The University of Maine at Orono, December 15, 1975. – [1] p. – Annotated document. – Included in the file entitled «Lyon, Fritz».