Supplies for panoramic photos?

[StephGaub]

Does anyone know where to find folders that are made just for large panoramic photos? I have found large map folders in every supply catalog, but nothing made specifically for the panoramic images. While map folders may be large enough, they are actually too large since most of the images are no more than 12" high.

Also, most of my panoramic images have been stored rolled up. I thought of creating a humidification chamber to help relax them, but am afraid that this will harm the photograph. They are too brittle to place under weights.

Any suggestions for either of these questions will be greatly appreciated!