Mary Lincoln's Insanity Case: A Documentary History

[Gencor]

From what I can gather it is a combination of several factors, depresion like you mentioned, side effects from medication, other health issues (female problems, bad headaches, bad back, etc.) , W A Evans in his book Mrs. Abraham Lincoln, indicated there was also family history of mental ilness.

Thank you so much for the info, Gene. I have always found Mary Todd Lincoln such a fascinating character in our history. I look forward to reading even more about her.