Here's a funny little card I found some time ago at Cardcow. There are some great old postcards there and I especially like the ones that have been used.
Esther has written a message to Charley Parsons (maybe a brother?) about Cale (?) who I am thinking may be her son and his family, home and auto. She may stay all summer! Fun to think about what the actual circumstances were behind the cards. No date - but from the pictures on the front probably in the early 1900's.