Photo: P.419.2691. Opening ceremony. Multiple colors of balloons being released in the stadium. National flags around top of stadium. Spectators packed in the stands. P.419.2692. Opening ceremony. U.S. Olympic Teams marching around the track field in the stadium. The men, in red blazers and white slacks. The women in white dresses with red and navy rainbow-pattern bias and back yoke. Other nations also marching, others lined up in the infield. P.419.2693. Olympic plaza w a tall free-standing "MEXICO68" structure in red and the Olympic rings in front of "68". Banners on poles and flags on very tall poles. Most of the people scattered in the plaza are dressed in ceremonial outfits (from the opening ceremony). Tall,multi-story buildings in the background. P.419.2694. Same as 2692 - different angle. Stands are packed with spectators. At the top of the stadium is the huge scoreboard and Natl. flags lining the upper edge. P.419.2501.3 USA Olympic Shooting Team in their ceremonial outfits of red blazers, white slacks and navy T-necks. Each signed his name above his picture.