Advantages in the Use of the New Standard, Narrow Width, Slow-Burning Film for Portable Projectors
Willard B. Cook · Transactions of the Society of Motion Picture Engineers · 1918
At the last meeting in April at Rochester, your Society adopted a new size of narrow width, slow-burning film as the standard for all portable projectors. As the firm with which the writer is connected has had nearly five years of successful experience with a similar product, the Chairman of your Papers Committee has requested me to prepare and submit to you some actual facts of the advantages pertaining thereto.