Sounds like an interesting group. I am more of a collector rather than a serious user of this stuff.
Ron, the oldest roll of film that I have is a roll of Kodak Super XX, Type 51 (for Graflex Roll Film Holders) that expired November 1, 1943. I have six more rolls of the same film that expired November 1949.
I have:
One Kodak Plus-X Film Pack (PX520, 2-1/4x3-1/4) with an expiration of February 1947.
One Kodak Verichrome (not Verichrome Pan) Film Pack (V518, 3-1/4x4-1/4) with an expiration of April 1948.
One Kodak Verichrome (not Verichrome Pan) Film Pack (V520, 2-1/4x3-1/4) with an expiration of August 1948.
One Kodak Plus-X Film Pack (PX520, 2-1/4x3-1/4) with an expiration of July 1950.
One Kodak Super-XX Film Pack (XX520, 2-1/4x3-1/4) with an expiration of January 1955.
One Kodak Super-XX Film Pack (XX518, 3-1/4x4-1/4) with an expiration of May 1955.
One Kodak Verichrome Pan Film Pack (VP520, 2-1/4x3-1/4) with an expiration of May 1958.
I have:
One box of Kodak Sheet Film Super Panchro Press Type B in 3-1/4x4-1/4, expired October 1949.
One box of Kodak Sheet film Commercial Ortho in 2-1/4x3-1/4, expired April 1951.
One box of Kodak Sheet film Panatomic-X in 2-1/4x3-1/4, expired February 1951.
One box of Kodak Sheet Film Super-XX Panchromatic in 3-1/4x4-1/4, expired March 1955.
One Box of Kodak Royal Pan in 3-1/4x4-1/4, expired in March 1959.
I also have a bunch of others from the '60s, 70's and '80s.
Dave