Doberman's were featured in the February (2002) issue of Dog Fancy. Maybe you can get a copy of that from the library? They were also the dog on Bredd All About It on Animal Planet this morning. If you have cable, maybe you can see if it is going to be replayed soon. I only watched part of it, but I know they were talking about dobie's as police dogs, assisstance dogs, etc.

Good luck!