I believe that's a mapmaker's error...
by Kbyrnes (2019-08-24 09:20:43)

In reply to: Kbyrnes, on page 11 in the 1975 map, what's the building...  posted by gond79


...because it's the current bookstore (you can see it also in the 2000 and 2017 maps with the same shape), which was built in 1998. That area was all open field or parking lot.