Spofford Style Bit Braces - 1897
Featured Braces - The Barber Brace, Dolan's ratchet patent
Peck, Stow & Wilcox Co..
PEXTO Braces
Another source (for information about all sorts of old hand tools) is:
Walsh, Peter C., Woodworking Tools 1600-1900, Smithsonian Institution. The e-book version is downloadable for free from Project Gutenberg. Information about augers is found starting at location 515.