Frances Perkins was the first woman in a presidential cabinet - heading up the Labor dpt during FDR's reign. Without her, we wouldn't have social security and unemployment insurance. This is a great biography, though there is a new one of Perkins published last year, that I haven't read, so can't say whether one is better than the other.
Frances Perkins is not as well-known as she should be. The first woman cabinet member, Labor Secretary for FDR, she was at the front of some critical changes, particularly Social Security. She is remembered as a workers' advocate.
This is a dense, detailed biography for those interested in her career and accomplishments. There is a new fictionalized history of her coming out - Becoming Madam Perkins - and I will be interested to read that as well and am happy someone is shining a spotlight on her remarkable life.