Thanks, finnlewis and hamartin 150,for your replies regarding the flu epidemic in the early 1900s. I have found documentation of this as well, but have not found anything recorded for 1913 for any type of wide-spread disease. I have recently learned that one of the two surving children is remembered as having had yellow fever at some point, though this doesn't seem to be the case for her sister. I'm still at a loss. Any additional leads would be greatly appreciated.