Oversize paper resources
Fox River sells many of their papers online in small quantities. This page has a list with links to all paper lines. Once you select a type of paper, you can choose "Get Samples" from the menu at the left. Note that some papers will not be available in larger sizes so you may want to select the size first. The website automatically limits your choices after that.
This page shows colors available from Neenah paper.
This page is the order page. Again, make sure to double check the size if it is important for your design. The Eames line has some unique textures based on Charles and Ray's design work.
This company has paper lines with more interesting color choices and textures, especially Carnival and Benefit lines. They provide this link for online merchants: