Dale and Jean Blecha James were married on September 5, 1948, and 78 years later their children celebrated their anniversary with a polka dance. They’ve been holding free dances on the Saturday of Labor Day weekend for a long time. At first, it was every 5 years, then every 2 years, and then they couldn’t stand it! For about the last 15 years, it has been every single year. Dale passed away in 200…