National Grandparents Day
Official site of National Grandparents Day with history, activities for groups and families, cards, and contests. Celebrated on the first Sunday after Labor Day.
About.com: Grandparents Day
Provides Grandparents Day facts, history, clip art, and crafts.
Annie's "Grandparent's Day" Welcome Page
Looks at the history of Grandparents Day as well as what the Bible say about grandparents. Also includes greeting cards.