How to find e-newsletters

[Abe]

Where can find a listing or resource for e-newsletters organized by category? I have a client who has a pet-related web site and another that runs a homeschooling site. They would both like to buy advertising in a newsletter. Any ideas how I can find out every good e-newsletter that's targeted towards their market?

[eljefe3]

Try this one [netmastersolutions.com...]
They've got around a 1000 different ezines which are broken down into category. [netmastersolutions.com...] is a listing of the various pet related ezines.

[Abe]

Thank you so much eljefe3. That was just what I was looking for.