I'm beginning to think that the Lincoln era was primarily one of corruption from the beginning to the end, and by the time Grant came along, the corruption was so inherent in the Lincoln's legacy government, that it became so obvious as to attract everyone's attention to it.
I think it is prophetic that the Lincoln government began as a bunch of corruption and influence peddling in Chicago Illinois. Still the source of much corruption in this nation's history.
It was well known how corrupt several of them were. Lincoln joked that he had confidence Seward would at least not try to steal a red hot stove......