If you've been researching your family for a while, you probably want to share what you've found with your cousins. Well, you don't need a book publisher and publishing your family history doesn't have to be expensive. There are services on the Web that can publish on demand for free. All you have to do is upload your book! One such website is Lulu.
Using Lulu, you can publish your family history in print or as an e-book for free. All you have to do is convert your book into PDF format (Lulu offers a guide on how to do it) and upload. You can have the books delivered to you or sell your book through Lulu. Lulu also offers paid services such as editing, design, marketing and retail distribution.
Don't forget to be a good steward of your family genealogy and cite your sources!
Lulu is at http://www.lulu.com