Four Marys and a Jessie

[mbgross]

Just finished up reading 4 Mary's and a Jessie by C.J. King. Enjoyed it very much and now have a much better appreciation of the Lincoln descendants, particularly "Peggy". I admire her more and feel like I understand her better.

On a related question, I was wondering about the alleged alcoholism of Mary Harlan Lincoln. The source I can find is Jean Baker's MTL biography. In her footnotes she suggest that Robert hinted at his wife's alcoholism in some letters. Does anyone know what letters she is referring to?