Du is a monthly Swiss cultural magazine. The magazine was founded by Arnold Kübler and first appeared in March 1941. Oliver Prange is its chief editor since 2012. Source: du-magazin.com/geschichte/
Vetsch Frei is responsible for the design since 2012 (issue 823). See more general images on their website, or peek into some individual issues: 854, 855, 856, 859, 861.