Maybe this is a little hyperbolic, but that was the ad for the National Clothing Company, at the corner of 7th and D St. NW. Check out this page from the Washington Post classified pages on March 29th, 1879. These are always fascinating to dig through. You can find some serious gems in them.
![Washington Post classifieds - March 29th, 1879](https://ghostsofdc.org/wp-content/uploads/sites/7/2013/01/washington-post-3291879-page-001.jpg)