The following articles appeared in various newspapers before, during, and after the Cambridge Springs 1904 chess tournament. Many thanks to Lawrence Totaro for providing these images.
Syracuse Herald February 22, 1904
This article mentions the start of the Monte Carlo Rice Gambit tournament and the status of the participant selection for the Cambridge Springs tournament.
New York Times April 29, 1904
The Post Standard April 30, 1904
New York Times May 8, 1904 Reference to Rice Gambit consultation games.