We may congratulate ourselves that this cruel war is nearing its end. It has cost a vast amount of treasure and blood. . . . It has indeed been a trying hour for the Republic; but I see in the near future a crisis approaching that unnerves me and causes me to tremble for the safety of my country. As a result of the war, corporations have been enthroned and an era of corruption in high places will follow, and the money power of the country will endeavor to prolong its reign by working upon the prejudices of the people until all wealth is aggregated in a few hands and the Republic is destroyed. I feel at this moment more anxiety for the safety of my country than ever before, even in the midst of war. God grant that my suspicions may prove groundless.
Lincoln talks about "Corporations", "Corruption", and "Money Power". He sounds like me, except I would argue this is how the war began, and he was their agent.
I note from your link the poster spent some effort to track down & "verify" this quote, but I don't believe it.
This language sounds "off" for Lincoln, more like something years later admirers might wish him to have said.
Also I note again that name, William H. Herndon, along with Jessie Weik, seems to be associated with any number of suspicious Lincoln quotes.
"Hidden Lincoln" indeed, hidden even from Lincoln?