FYI --- links to Allen biographies and family genealogy books can be found at http://www.genealogybooklinks.com/http://www.genealogybooklinks.com/ Under genealogies and biographies select "A" then select Allen.
Links to 20,000+ freely available full-text, online history, biographies & family genealogy books gathered from 25+ sources. Organized by name, subject & state laid out in an easy to use browse able format. Some states such as Mich, NY, and Mass, are more developed then others. It’s also a great source for Civil War regimental histories.
Check back often, titles and links are added weekly.