Thanks, Dave.
I happened to be down on Broadway this afternoon playing a gig at Layla's Bluegrass Inn and got a better picture of that plaque.

According to the gentleman pictured below, whom we'll call, oh, Cecil, and who's been down there awhile, Toby Carr is alive and well and living in California. He still owns several buildings on the block and had the plaque put up in 1994. The building was erected (heh, heh, heh, he said "erected") in 1855, so it was almost new in the picture atop this thread.

i thought I might try to hawk some of my wife's newest steel guitar covers
www.sharpcoversnashville.com
while I was down there, but the only steel player on the block besides me was the incomparable Mike Sweeney, and he's already got one.
So anyway, ya'll visit Broadway when you're in town, and you locals don't forget the Big Bob Martin Appreciation Day at Post 88 this Sunday.