Quote Originally Posted by Jim Edmond View Post
I believe the orginal Tri-x (200 ASA) was introduced in 1954. Same year as the M3.
According to Wikipedia, that is true regarding 135 and 120 formats. Just for fun, I just checked with this book:
and found that the first use there of Tri-X is Cornell Capa´s September 1955 photos from Buenos Aires, when the Peron regime was thrown out. Before that, it is all XX and Plus-X when Kodak is involved.