Following is a java applet that will display the family tree of Russell Miles Sturges and Marian Irene Nelsen. The tree is "dynamic", that is, you may click on any person's name to see the family tree of that person as well. Hovering the mouse pointer over a person's name will display the vital data for that person.
Click on the small tree icon, and enjoy!.
(By the way... The applet opens a new browser window. When you are through viewing the family tree display, just close that browser window to return to this one.)