Thanks again to everyone who provided responses to my questions.
Unfortunately, when I went to Hunan Manor in downtown St. Louis for a Saint Paul sandwich on Monday around 5:00 p.m., it was closed -- it appeared, permanently. (I thought it might be closed because it was Monday, but I checked back a day or two later and it still appeared to be closed.) I never did get a Saint Paul sandwich. I ended up getting a grilled cheese and bacon sandwich "to go" from Culinaria. The sandwich was huge (I ordered a whole, not a half, not realizing how big it would be), and very rich, and I couldn't finish it. Very reasonably priced. http://www.culinariaschnucks.com/
I went to Everest (the one on Olive Street) at lunchtime on Tuesday, and had some excellent vegetable pakora (grease free and with a tasty crust) and a good Nepali chicken dish with rice. However, if I were to go back, I would choose the buffet. The variety looked excellent. Unfortunately, the person I was with (who was a little dubious about Nepalese food) wanted to order off the menu. It was good, but I would have liked to have tried some more things. http://everestcafeandbar.com/
I went with a friend to Sweetie Pies "at the Grove" for soul food for dinner on Tuesday -- in my case, that meant fried chicken wings, green beans, mashed potatoes, corn bread, and fabulous lemonade. It was all good, though not quite as hot as I might have liked (other than the mashed potatoes, which had just been refreshed on the cafeteria line), and the service was very friendly. My friend had the salisbury steak and enjoyed it as well. http://www.riverfronttimes.com/locations/sweetie-pies-the-grove-41863/
I went to breakfast at Roosters for breakfast Wednesday morning with another friend. We each had one of the breakfast crepes -- goat cheese, romaine, tomato and bacon. The filling was very high quality (artisanal cheese and locally-sourced bacon), but the crepe itself left me cold -- cardboardy consistency. If I was to return, I'd take the option they offer of making their crepes as omelets. http://roosterstl.com/
For dinner on Wednesday, my husband (who had just arrived from Washington, DC) and I went to The Hill. We had reservations at Gian-Tony's for 5:30, but got to The Hill around 4:30, so we had some time to kill. We went to Di Gregorio's market http://www.digregoriofoods.com/retail.html
and to Gelato Di Riso http://www.gelatodiriso.com/main.html
before dinner, and enjoyed both. (We hadn't intended to have gelato before dinner, but the guy in the shop warned us that the varieties of gelato we saw displayed probably would be sold out after dinner. Soe we each had some gelato -- hazelnut chocolate for me, and espresso for my husband. They were both very good.) The market is excellent -- very clean and orderly, with lots of variety of both fresh and imported foods, including excellent Italian wines. I wish we had an Italian market of that quality in the Twin Cities.
We enjoyed Gian-Tony's very much. We'd chosen it because we liked the idea that they grow some of their produce, and that they take reservations. We shared tostati and involtini (both very good, especially the involtini); I had the "mushrooms stuffed with seafood" appetizer as a main course, and my husband had chicken with lemon sauce, which came with a house salad and a side of pasta. The marinara sauce was excellent with the involtini, the tostati, and on the pasta, but I thought it overwhelmed the delicate seafood in the mushroom appetizer; if I were to have that dish again, I'd ask for the sauce on the side. Service was very attentive. http://gian-tonys.com/
After dinner, we went to Crown Candy Kitchen for (more) dessert. Great atmosphere -- made me think of the Candy Kitchen in "The Music Man." They had black walnut ice cream on the menu, which is one of my all-time favorites and often hard to find. I had two giant scoops -- and it was delicious. http://crowncandykitchen.net/
The morning we left St. Louis, we went to the Goody Goody Diner. This was the highlight meal of the St. Louis part of our trip. I had three fried chicken wings and half a waffle; my husband ordered the famous Wilbur omelet. I also asked the waitress whether their biscuits were good. She told me they were outstanding, but that she always has them grilled. So we ordered two biscuits, grilled. They were
truly outstanding. I haven't had grilled biscuits since I ate them in Hathaway's in downtown Cincinnati several years ago. Those were good; these were from another dimension of excellence entirely. The chicken wings were also delicious. There was nothing wrong with the waffle, but it was a Belgian-style waffle, and I prefer my waffles much thinner. That's just a matter of taste; if you like Belgian waffles, you'll like Goody Goody's. I washed it all down with a frosted mug of their superb root beer.
My husband thoroughly enjoyed his Wilbur. As others have observed, it looks like it should be a "heartburn special," but he suffered no ill effects. http://www.goodygoodydiner.com/
As we were leaving, we ordered a double cheeseburger for my brother, who had been unable to meet us for breakfast but was joining us at the transportation museum. Even though it took a while to meet him -- we stopped at Faust Park to ride on the vintage carousel en route -- the cheeseburger was well wrapped, and stayed warm. My brother loved the cheeseburger, and noted they even included a package of "wet wipes" with the cheeseburger.
From there, we went on to Illinois, which is another story.
Again, thanks to everyone for your help with this trip!