GENERATIONS is a composite document containing Dave's primary ancestral lines. Multiple versions have been self-published, and links to them are found, below.
THIS LAIRD-MCCONAUGHEY GENEALOGY contains information about the families of Nellie Logue and her two husbands, Elmer McConaughey and Earl Laird. Nellie and Earl were Dave's maternal grandparents.
Laird-McConaughey Genealogy (PDF) Updated 7/20/2015
I use and recommend Millenia Software's Legacy Family Tree. Their standard version is free, and is quite full-featured. You can find it by clicking the graphic below.
The full (pay) version adds significant functionality over the free version. I use the full version to generate the various documents you see above (e.g. Generations V3). Once you define a document (book) format, you can easily update it with new data just by pressing a button. Too cool! (and quite a time-saver).
Full disclosure: If you end up buying the full version after clicking through the link above, I get a cut of the sale through Millenia's affiliate program. If you choose to do so, thanks!