Peter Norbeck’s papers (SD governor 1917-1921 and US senator 1921-1936) has a folder titled Thirty Hour Week. Archie Gubbrud’s papers (SD governor 1960-1964) has a folder titled Forty Hour Week. Was there a discussion about working thirty hours per week before there was a discussion about the forty-hour work week?
Both sets of papers are in the Archives and Special Collections.
Happy Labor Day.