[1] Peter Keetman lived with his wife Esa in Prien, Breitbrunn and Marquartstein in Chiemgau (Upper Bavaria).

In the exhibition Subjective Photography put together by Otto Steinert in 1951 and in the accompanying photobook, Keetman's works have a formative role.

His work series Eine Woche im Volkswagenwerk (Volkswagen: A week at the Factory), which he photographed in 1953 in Wolfsburg, became particularly well known.

His pictures of assembly line technology, car body parts and technical details of the Volkswagen Beetle were revolutionary, graphically designed photography through cropping and perspective.

The Museum Folkwang and the F. C. Gundlach Foundation dedicated a comprehensive retrospective to the photographer in 2016 on the occasion of his 100th birthday under the title Peter Keetman.