In an earlier post, I mentioned Henderson's Chicken Breed chart which can help you narrow down your choice of chickens. The following links can be very helpful in conjunction with the breed chart. They are a vast resource of chicken photos. There are multiple high quality photos of each of the breeds.
Just as an example, I was able to use the chicken breed chart to narrow down my choice of chicken to a Wyandotte. I was then able to see what all of the different types of Wyandottes looked like, using the following links.
Chicken Breeds A-C
Chicken Breeds D-O
Chicken Breeds P-Z
And just in case anyone is interested in seeing the types of Wyandottes I ended up getting, here they are
The Silver Laced Wyandottes look like this beauty.
The Golden Laced Wyandottes look like this.