By Viennese publisher Hugo Heller, a close friend of Klimt's, and is sometimes referred to as the "Heller Portfolio"
Text from Wikipedia, available under CC BY-SA 4.0.
- #wikipedia
- #event
By Viennese publisher Hugo Heller, a close friend of Klimt's, and is sometimes referred to as the "Heller Portfolio"
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-17 from Wikipedia. The archived copy is preserved so this citation survives link rot.