https://www.louisianadigitallibrary.org/islandora/object/oplib-pho%3A353
The photo in the link above, shows the back of the buildings on the 100 block of South Grand during the 1927 flood. You can see the Trousdale and Wright building (130 South Grand), the Ouachita National Bank building and A. Keller & Son Bicycles. You can tell the water is high and can see they have the sea wall up.
Ouachita Parish History Tidbits 