Before 1917, in the U.S., you could send a postcard for only 1¢. After 1918, the price went up to 2¢, because of World War I. These postcards then became called "Penny Postcards."
The one above are of California, but each state, in fact each county in the U.S. is represented by a number of these historic "Penny Postcards."
This one of Buds Barbeque, Hilliard, is from Nassau County in Florida.
And from my hometown of Toledo, Ohio:
Yes, believe it or not, we DO have a yacht club and yes, it does have a marina today with proper yachts that sail in Lake Erie, along with other water craft.
I have spent the better part of the morning (shame on me) perusing this website:
If you would like to see how your hometown (or any town/city in the U.S.) was pictured and posted for a penny, click on the link above to see the website. These postcards are not for sale, but they do take scans from collectors to add to their library if you are a collector or just happen to have a few of these beauties in your possession.
I warn you, it's a time guzzler but well worth the look!