I could be wrong (I often am
), but I don't think Carnival puts out brochures for each ship. Here's the link to Carnival Dream on the Carnival site: Carnival Dream Cruises, Dream Cruise Ship - Carnival Cruise Lines
I think if you look for a brochure for your destination(s), or just the "main" Carnival Brochure, you'll have more luck!
If you're close to a AAA office you can pick up lot's of brochures without booking anything.
Have a great cruise!