A labor economist friend who studies the minimum wage writes:I found a 103 year old BLS report on a minimum wage increase in Oregon that had a stronger grasp on credible research design than Card & Krueger. Also, one of the authors is named "Bertha von der Nienburg" and she was 24 when the report was written. If I was the sort of person who did that sort of thing, I'd blog about this.The study is "Effect of Minimum-wage Determinations in Oregon," Bureau of Labor Statistics, July 1915. The authors are Marie L. Obenauer and Bertha von der Nienburg. I got a little bogged down working my way through it and the authors don't come to any strong conclusions. But the care they take and the granularity of their
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