I did text mining before to clarify the characteristics and trends of disaster evacuation research from the research papers. I have found the database which is the most appropriate for the project with Japan Association for Earthquake Engineering (JAEE) members. Other members who are mainly natural scientists or engineers used the Spinger link and other databases for analyzing general disaster related papers. From a social scientific perspective, the E.L. Quarantelli Resource Collection (Disaster Research Center) from the University of Delaware was selected. I have got a lot of help from the staff. I really really appreciate her kindness.