On July 3, 1938, President Franklin Roosevelt dedicated the Eternal Light Peace Memorial and lit the eternal flame at Gettysburg Battlefield. An excerpt from the article:
"An idea born in the wake of the 1913 veterans reunion at Gettysburg, the Peace Light Memorial is the largest monument on the first-day battlefield at Gettysburg. Of the nearly 1,400 monuments and markers on the battlefield at Gettysburg, the Peace Light Memorial is the only monument with the word “Peace” in its name.
Made of Maine granite and Alabama limestone — and funded by contributions from Pennsylvania, Wisconsin, Illinois, New York, Indiana, Tennessee, and Virginia — some 250,000 people attended the dedication ceremony in 1938; 1,800 of those participants were Civil War veterans."