Use to do a lot of graphic design and always was in the market for older images to scan and incorporate into work. Those days have long gone by but I’ve kept all the old postcards collected over the years. Anyway, this looks to be 1950s or 1960s era postcard material.
Manufactured by the Carroll Post Card Company (date unknown, guessing 1940s or 1950s), these postcard style photographs were probably sold in a tourist gift shop or what not. The Immaculate Conception Grotto was located on the grounds of St. Angela Academy in Carroll, Iowa. This grotto was built by Father Paul Dobberstein. The Academy would later become Kuemper Catholic High School. When the high school built an addition in 1957, the Immaculate Conception Grotto was dismantled by Father Louis Greving and its stones incorporated into the Grotto of the Redemption in West Bend. Found in a thrift store in Fayetteville, Arkansas.
The cars are definitely 1960s and possibly 1970s models. The two old guys, with flags, are both wearing a fez. Hard to tell if this is a parade, a funeral procession or something more nefarious. No other information on the photograph. Found in a thrift store in Northwest Arkansas.