In 1956 Petri celebrated their 70th Anniversary and commissioned a 16mm filmed silent 30 minute documentary called "The History of Petri Wines" to run at their facility and at wine fairs. It was filmed silent to 1) save money, and 2) allow it to be shown in crowded noisy gatherings. C.R. Skinner Productions of San Francisco produced this. (A film print survives in the Niles Essanay Silent Film Museum film archive.)
