1. Manuscripts and Archives Division The New York Public Library. 1450–1475. Historiated initial and another coat of arms.http://digitalcollections.nypl.org/items/510d47da-e47a-a3d9-e040-e00a18064a99
2. The Miriam and Ira D. Wallach Division of Art Prints and Photographs The New York Public Library.1882.Valentine cards utilizing decorative design depicting flowers hearts butterflies and a tree.https://digitalcollections.nypl.org/items/510d47db‐bc92-a3d9-e040-e00a18064a99
3. Spencer Collection The New York Public Library.1910.Front doubleur.http://digitalcollections.nypl.org/items/8a6be0f9-3d78-b15e‐e040-e00a180602c7
4. Agnieszka Murphy.2018.Polish folk art. 123RF https://de.123rf.com/lizenzfreie‐bilder/29119380.html?&sti=nmw3eri7lnbl7fxnhi|&mediapopup=29119380