Lost collection of vintage baseball cards including rare Ken Griffey Jr. Rookie Card at a sports memorabilia show near Fargo, North Dakota.

I lost a collection of vintage baseball cards while attending a small sports memorabilia show near Fargo, North Dakota. The cards include rare editions like the 'Ken Griffey Jr. Rookie Card,' which are in excellent condition and stored in protective sleeves. I think I might have left them at the table while chatting with an old friend, and I've been really upset about it ever since.