The floors are done! The quarter round trim still remains (the paint is drying as we speak), and the transition strip to the family room carpet needs to be cut and stained, but that is much less back-breaking and knee-aching work, so I don't really count it.
I almost had the job done in one day. I could have, too, except yesterday was the quarterly evening Master Gardener meeting and I had to stop to clean up and get decent, make something for the covered dish dinner, and attend the two hour plus gathering. So when I installed the last piece this morning before 10:30, I was rather pleased with my pace overall. Especially considering that this flooring was purchased as seconds, so I was constantly hunting for a board with the "right" flaw that would be cut off or hidden. I can only imagine the luxurious ease of installing perfect flooring where you can grab any piece you want. Maybe on the next house!