[6] Loewensberg had a lifelong friendship with the painter Max Bill and his wife Binia.

[3] In 1936 she painted the first concrete pictures and helped in 1937 with the founding of an association of modern artists in Zurich.

Loewensberg associated with Max Bill, Camille Graeser and Richard Paul Lohse.

[citation needed] In 1964 Loewensberg opened a jazz record shop, City Discount, which closed in 1970.

[7] In 1936, she was included in the exhibition Zeitprobleme in der Schweizer Malerei und Plastik (Time Problems in Swiss Painting and Sculpture) at the Kunsthaus Zürich.