Herman had the most time to develop as an artist, yet he remains the least well-known and accepted within Croatia. Recent acclaimed retrospective exhibitions have shown previously unknown Herman drawings, most of them from the Munich period (1906–1933) and have led to a better appreciation of his work. While in Munich, Herman encountered the ideas of prominent art historian Julius Meier-Graefe and his aesthetics of "pure visibility". He found inspiration in the work of such artists as Giorgione, Tintoretto, Palma Vecchio, and Hans von Marées. Herman was a solitary artist who pursued his own vision, largely unaffected by contemporary trends in modern art. By the 1920s he was known for being somewhat of a recluse. His use of symbolism developed before the expressionism movement became widespread. His paintings show ever stronger expressiveness, with his main motive to depict man and his inner world. Herman's early watercolours show strong, brilliant colours out of which his own particular expressionist colourism developed. From 1925, his work also reflected an increasing vision of future persecution and terror. Herman's 1973 painting Dva stabla pod brijegom (Two Trees at the Foot of a Hill) was featured on a stamp in the series Croatian Modern Paintings issued 2008. Works Dva stabla pod brijegom (Two Trees at the Foot of a Hill) 1973 Exhibitions Solo shows 1963 Oskar Herman – Galerija Umjetnina Split, Split 1994 Oskar Herman – Gallery of Fine Arts / Galerija likovnih umjetnosti, Osijek, Osijek 2006 Oskar Herman – Paintings and drawings 1906–1974 – Museum of Modern Art Dubrovnik, Dubrovnik 2007 Oskar Herman: Drawings – Glyptotheque – Sculpture Museum, Zagreb 2010 Exhibition of Oskar Herman paintings opens in Zagreb 23 June – 3 Dec Exhibition includes 340 pieces from his earliest work made in Munich to his last painting in 1974. Group shows 1973 Paintings of the Munich Circle – Umjetnicki paviljon / Art Pavilion Zagreb, Zagreb 2006 Croatian Collection – Museum of Contemporary Art Skopje, Skopje 2007 Iz fundusa galerije – Museum of Modern Art Dubrovnik, Dubrovnik 2008 From the holdings of the museum – Museum of Modern Art Dubrovnik, Dubrovnik 2009–10 Zagreb – Munich: Croatian painters and the Academy of Art in Munich – Art Pavilion in Zagreb Public collections Museum of Modern Art, Dubrovnik, Croatia Museum of Modern and Contemporary Art, Rijeka, Croatia Rovinj Heritage Museum, Rovinj, Croatia Art Gallery, Split, Croatia Museum of Contemporary Art, Zagreb, Croatia Museum of Contemporary Art