As you prepare you family history, you may find that you would like to include some valuable source material but find that it bogs down the flow of your book. This is a good use for footnotes or endnotes. Most word processors can automatically number and track your footnotes or endnotes for you. I have found that footnotes in personal and family histories are distractive and detract from your book. Use endnotes instead. These can appear at the end of each chapter if you have a lot of them, or at the end of your book (just before your index) if you have just a few. Not only do endnotes look better, but they are easier than footnotes to format and control.