Johnstown Flood of 1889: write a first-person story as if you'd been there
http://www.personal.psu.edu/faculty/j/x/jxz8/Student_Webquests/joyner_rhodes_yingst/webquest1.html

Grandpa's Mountain: Use historical fiction to explore the issues of government take-over of private land.
http://k12.albemarle.org/RedHill/Staff/White/WebQuests/GPAMtn/home.html

Laura Ingalls Wilder Scavenger Hunt
http://www.macomb.k12.mi.us/wq/WebQ97/LAURALES.HTM