an image from the US government EPA "Sunwise" program. I converted it from PDF format. the source link is here - http://www.epa.gov/sunwise/doc/poster.pdf
This is the "book plate" page from "Dorothy and the Wizard in Oz", published in 1908. The illustration was by John R. Neill. This copy came from the Internet Archive's PDF copy, which can be seen here:
http://www.archive.org/details/dorothywizardino00baum2