Source: https://m.facebook.com/story.php?story_fbid=2624265930928736&id=100000360635686

star of David on the facade of a Wooden Synagogue, one of hundreds that were all over Europe since the 17th century. See: G.S. Oegema, Realms of Judaism. The history of the Shield of David, the birth of a symbol (Peter Lang, Germany, 1996) p. 87.

Amazon.com: The Golem and the Wondrous Deeds of the Maharal of Prague: 9780300143201: Rosenberg, Yudl, Leviant, Curt: Books