You're about 150 years too soon to use a lack of evidence on the Internet to call into question a phenomenon that happened over 100 years ago. One day, sure...

You're about 150 years too soon to use a lack of evidence on the Internet to call into question a phenomenon that happened over 100 years ago. One day, sure... we can consider the human story to be largely Internet-documented and accessible. We're not there yet, and many older sources must still be found the old-fashioned way- by visiting a library and pulling their undigitized, un-internet-searchable works.