Huzzah! Huzzah! Huzzah! This morning, when the sun came up, I showered and prepared to go to the University to search the parking lot for my jump drive. While I was in the shower, my wife looked in our driveway ... and saw it in the grass!
I've never loved her so much as at the moment she showed it to me.
After waiting a couple of hours to be sure all the dew had tried off it, I popped it in, and it worked perfectly. My first act? Backing it up on my fresh new hard drive.