https://vlp.cah.ucf.edu/semwartableau.html 
https://vlp.cah.ucf.edu/semwartableau.html 
http://journalofdigitalhumanities.org/3-1/visual-historiography-visualizing-the-literature-of-a-field/ 
http://www.viseyes.org/show/?base=vh 
http://www.viseyes.org/show/?base=vh 
http://www.viseyes.org/show/?base=vh 
http://crdh.rrchnm.org/essays/v01-15-notes-on-the-future-of-virginia/ 
http://crdh.rrchnm.org/essays/v01-15-notes-on-the-future-of-virginia/