Enlarge image Blossoms: Will-Fred Bolle found this postcard from Havana in an old book. She made him curious about the sender. Continue reading with SPIEGEL+ Read on now. With the right SPIEGEL subscription. Special reports, analyzes and background information on topics that move our society - by reporters from all over the world. Test now. All articles freely accessible on SPIEGEL.de. DER SPIEGEL as an e-paper and in the app. Test one month for €1. One month for €1 Try it now for €1 Already have a digital subscription?Sign up here Read more with SPIEGEL+ More perspectives, understand more. Free...