In what is possibly the newest (and last) Zip'N built (2010, replacing an older Zip'N Shell at 200 North Texas Avenue), this downtown gas station at 208 North Texas Avenue takes up three quarters of the block and is the main gas station/convenience store anchoring the downtown area (some older options take up the slack to the north and west).
At the northeast corner of the block (the original 208 N. Texas Avenue) was Shining Star Detail, which relocated. The rest of the lot (the part that Shell occupies) was a parking lot, presumably for the office building occupying the remainder of the block. Catty-corner to the Shell (at 24th Street) is a Shell Rapid Lube, likely associated with the gas station for years (it predates the new store, probably decades old).
The tenant to the right of Zip'N appears to have always been empty, but to the left was originally a Krispy Krunchy Chicken very briefly in the mid-2010s, then the sign got modified when it became Bellon's Kung Pao Express (which operated for less than a year; it's supposed to look closer to this). Esmeralda's Taqueria has been here since late 2016.
Across the street is a Dairy Queen, which I photographed the exterior of but due to new site "rules", outlined in the Harmony Science Academy post, it can't make the cut, but perhaps you might see it on the City Directory pages of Carbon-izer soon. Zip'N qualifies because of the restaurant on site (and given that it has the same address, I assume it's connected to the store) has changed a few times.