Terry, what happened in the early 1900s that it had such profound and 
disastrous influence on the health of the citizens? 
I know that milk pasteurization started at that time.  Could that be a reason?  

Barbara



  During the early 1900's, various manifestations of
  heart disease began to occur. The first few cases of
  it were misdiagnosed because the doctors had never
  seen it before. 

  Terry Chamberlin