I also found there was a 17 page book from the US Congress's Senate Committee on Claims for the Relief of Alexander Swift and Company and Niles Works.
Unfortunately, I could not look at it, but I imagine it had something to do with the legal problems involving his selling the monitors Oneota and Catawba to Spain.
After that, I wasn't able to find any other information, but he was a rich and powerful man. I'm sure there has to be some other information on him.
If Anybody Knows Anything? --Old B-R