Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Maria Osten:

This text has been unreferenced on Wikipedia for a very long time. If you can't find a source, be bold and remove it!

"

Osten was born Maria Emilie Alwine Gresshöner in Muckum bei Bünde, Westphalia, Germany, the daughter of Anna Maria (Pohlmann) and Heinrich Gresshöner.[1] Her 1935 book Hubert in Wonderland is about her adoption, with Pravda journalist Mikhail Koltsov, of a 12-year-old boy who was the son of a German Communist from the Saar region of Germany. They took the boy to the Soviet Union in 1935; his arrival there was highly publicized, as it was considered a demonstration of the cooperation of fellow Communists to save a young boy from having to grow up in Nazi Germany. The boy was toured all around the country and taken to visit Marshals Mikhail Tukhachevsky and Semyon Budyonny in the Kremlin.[citation needed]