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Werner Mantz, Stairwell Ursuline Lyceum (Stairwell of the Ursuline Lyceum), Cologne (D/GER), 1928. Architects: Noven & Willach. Portfolio: Galerie Schürmann & Kicken, 1977. ©Collection Bonnefanten
Werner Mantz, Stairwell Ursuline Lyceum (Stairwell of the Ursuline Lyceum), Cologne (D/GER), 1928. Architects: Noven & Willach. Portfolio: Galerie Schürmann & Kicken, 1977. ©Collection Bonnefanten