University of Michigan
American Verse Project: p.l. Dunbar: Sunshine and Shadow
Online text of Paul Laurence Dunbar's "Lyrics of Sunshine and Shadow." Links to each of his texts for easy navigation.
University of Utah
University of Utah: Aspire: Seasons Exercise
In this activity, use seasons to determine your location. Click on the different dates to view the earth's shadow at different times of the year from the sun's position.