Mrs. Howard's Class site shares some resources for teachers about Social Studies foldables
Review Activities using Foldables (specifically US content) from US History
Real Classroom Ideas has a great pdf download to help create your own foldables! MUST HAVE
Catawba County Schools Foldables Resource This one is a wow resource, great pictures.
A huge list of Social Studies foldables related to US curriculum
Plus don't forget to check out these blogs that have volunteered to contribute to Foldables Week for Social Studies when you get a chance...