The demise of the River Room prompted me to -- what else? -- spend countless hours on the internet.
Specifically, to get a peek at the restaurants that once fed Twin Cities shoppers, a subject that neatly fits into the intersection of several of my obsessions, namely, architecture and design, department stores and local history.
Naturally, I turned to one of my favorite time-suck destinations, the Norton & Peel photo archive at the Minnesota Historical Society's website. Don't know it? You should. It's an incredible -- and free -- resource.
This digital library holds thousands of easily searchable images, most of them photograped by Walter Norton and Clifford Peel between the mid-1920s and the late 1960s; the pre-1925 images are credited to their predecessor, C.J. Hibbard.
While stumbling across a number of finds, I did discover some disappointing gaps. Where, for example, is the one-and-only Fountain Room at Young-Quinlan? Or such mid-century classics as the Valley View Room at Dayton's Southdale, the Minnesota Room at Donaldson's Southdale, or the Bubbling Kettle at Dayton's Rosedale? If you've got images of them, send them to me at rick.nelson@startribune.com, and I'll post them.
Here's what I found:

The restaurant inside Donaldson's Glass Block, Nicollet Av. and 6th St., Minneapolis, 1910. The elaborate room was designed by noted Minneapolis decorator John S. Bradstreet. His aesthetic lives in on in the incredible Prindle House period room, saved from a Duluth mansion, at the Minneapolis Institute of Arts.

When President William Howard Taft visited Minneapolis in 1911, he enjoyed what appears to be an all-male luncheon in another one of John Bradstreet's sumptuously appointed dining rooms at Donaldson's Glass Block (so named for the five-story building's many windows). The next time President Obama drops in on Minneapolis, wouldn't it be great if he cracked open a popover at the Oak Grill?