This one was sent from Pittsburgh, Pennsylvania. On the back, the text under Pittsburgh says: "Between 1891 and 1911 Pittsburgh was spelled without the "h". This photo was taken in the rotunda of the Pennsylvanian, at the corner of 10th and Liberty".
I just got this one recently. I always think it's fun when they add stickers :)
This is the first cartoon postcard I've gotten! It was sent from Poland.
This one was sent from Arizona and it says "The sight of a rainbow after a desert shower is magnificent". She also included an interesting fact about the desert: "When it rains in the desert it really does have its own smell. A plant called the creosote bush makes a wax like substance to keep in H2O & fend off animals. When it rains though, it creates the smell of desert rain". 
This was sent to my grandparents after they got married. The postcard is from the Everglades Club in Palm Beach, Florida. It was mailed in November of 1947.