There are several sites on the internet that contain great clip art and holiday graphics. However, one site that is good for finding holiday graphics for the holidays that are smaller is www.hellasmultimedia.com

This site contains holiday graphics for all of the celebrated American holidays. They have graphics for the holidays that are very celebrated such as Christmas, Easter and the 4th of July. They also have holiday graphics for holidays that are not celebrated as much such as Columbus Day, President's Day, Veteran's Day, Labor Day, Memorial Day, Flag Day, May Day, Mother's Day, Father's Day, Canada Day, and April fool's Day. They have very good graphics for all of these holidays and more on this site.

So, if you are in need of some good graphics for the lesser holidays or generally, for any holiday then www.hellasmultimedia.com is a good site to look at to get these holiday graphics.