"Mrs. T.E. Smith, 405 South State street, well known Champaign resident, celebrated her 80th birthday anniversary on Tuesday. She was honored at open house during the afternoon and evening when her many friends called. All of her children were at home for the occasion."
The 1900 census says Amanda was born 10/1861.
The Illinois death index says she died 9-10-1939. The date posted relies on the newspaper article in 1942 describing her 80th birthday party.