
Also a written pedigree can be more useful the more information it contains. This is why many breeders prefer to print their own as you can include Hip scores, colour, as well as titles etc.
~After that you need to stud the actual dogs.
A good place to start is to buy the Breed club year books for generations back. I started with 10 years then 20 and any more I could get.
In these breeders will review their kennel successes and advertise studs etc, so you can at least get to see photos of the dogs in the pedigrees and also see those for their offspring.
Of course a photo is just a starting point and shows you what they looked like.
After that you have to be tactful, you have the photos, know what the visual type was and what was produced, hopefully you have the Hip scores etc, so that has already fleshed things out for you.
After that any particular dogs, especially influential ones(those who have appeared more often in the pedigree and that of other dogs), you need to find people than knew the dogs themselves,a nd preferably meet them yourself (usually possible for the first few generations).