I want to know the answer to the following question:
What types of film did the ANSI measure?
All the background I'm provided with is that "Based on earlier research work by Loyd Ancile Jones (1884–1954) of Kodak and inspired by the systems of Weston film speed ratings and General Electric film values, the American Standards Association (now named ANSI) defined a new method to determine and specify film speeds of black-and-white negative films in 1943.". Is that enough to answer the question?