Famous Atlanta Falcons football players will leave their cleat marks tonight on the sacred sod of Gainesville City Park, a place where memories — athletic and otherwise — have been made for more than a century. When the space was first leveled for a football field early in the 1900s, there were no stands and little if any grass; fans would line the sidelines or perch on the hillsides of the natural bowl-like stadium. It wasn’t until the 1930s when President Franklin Roosevelt’s Civilian Conservation Corps erected permanent stone stands that remain a part of seating that now accommodates thousands of spectators.