Really? The Lee & Roscolux swatch book are available as free samples directly from the manufacturer. I'm sure the Cenegel one is too, but I don't have that one. You can get the Lee ones here.
Fill that out and they send you a few brochures, the filter swatch book, and a CD. The CD contains PDFs of a few other brochures and a few posters.
I don't have a link to the Rosco filters, but the process is the same. Go to their website and fill out the request for information thing, or whatever it is.