321 University Drive: Charlie's Grocery was here since at least 1965 up to 1987. Wells Fargo opened in 2001...probably not the same footprint.
323 University Drive: Advertisement for Grand Opening of The Varsity Shop in 1975, no other reliable references found. In February 1976 it moved to 301 Patricia.
325 University Drive: Jeans 'n Things opened in April 1971 and disappeared sometime after December 1972. Heroes Clothing Co. opened August 1973 and by the late 1970s briefly the home of Loupot's before moving next door.
327 University Drive: Texas Aggie Book Store opened in 1969, making it one of the city's oldest businesses. Since around 2006 it has been Texas Aggieland Book Store (related to a crackdown on TAMU trademarks). Sometime around 2023-2024 it became TXAG Store since it wasn't really a "bookstore" anymore.
I've put the build date as [1950s] but that's subject to change.