1) check out the website: Online City, County, and Rural Directories Website
(remember, this is a work in progress and it will take quite some time for it to be "done", if ever, because of all the great online resources available out there)
2) check out the blog, Online City, County, and Rural Directories Blog,
to keep updated on the website. You can bookmark it, add it to your favorite feed reader, or receive updates via e-mail.
3) send me your suggestions using this forum. Do you know of any great online city, county, rural or other directories? I have listed some main ones on my Resources
page on the website, but if your local genealogical or historical society, library, archive, university, museum, etc. has online directories (scanned or transcribed), please send me the link!
Thanks for all your help! I hope the site will be useful to you in your research!