(Brad Davis/The Register-Herald) World War II veteran and former teacher Buford Hartsog is serenaded with the happy birthday song as he celebrates his 100th birthday inside the school house on the Youth Museum/Exhibition Coal Mine grounds Saturday afternoon. Standing with him are sister-in-laws Barbara, left, and Nancy Hodde, while younger brother Jarrell, background far left, and his wife Loretta, background seated, look on.