Hi. E L Cord was my step-fathers uncle. I saw your posting and found this web site hope this helps.
http://www.7stringuitar.com/eastcoast/history.htmlI had a family history of the Cord's dating back to an aide to Napoleon Bonaparte but it was destroyed in a fire. I will try to contact some of my family members to see if one of them still has a copy. If I find one I will give you as much info as I can.