As you can see below, it appears that 2 different people wrote notes on the reverse side. One person, probably the original owner of the postcard, appears to have made the notes after visiting Cottage Gardens:

"Big chair - greeted us on porch. Many hugh [sic] magnolias in yard. Lovely glassware a collection of 14 different glasses, a hugh [sic] copper luster pitcher."

The other individual noted that the card was purchased on December 8, 1980, at Conover Square in Oregon, Illinois.

The printed description on the card reads, "Built in the 1790's. One time owned by Don Jose VIDAL, acting governor of the Natchez territory at the time of the Spanish evacuation, (1798), it is noted as a type of early architecture now growing rare as it was supplanted by the later mansion style. Of special interest is the front door and the unusual stairway."

The line dividing the back reads, "Photo by Earl M. NORMAN; Natural color post card made in U. S. A. by E. C. Kropp Co., Milwaukee, Wis., - (All)

According to Mashburn's The Postcard Price Guide, A Comprehensive Reference,  the Linen Era postcards were produced between 1930-1945. we can be fairly certain that such "bird's-eye" views were still on the novel side, air travel not yet being common yet. The paper has a linen-like texture, which gives this type of card a distinctive appearance.