Now that's an odd assertion. According to this site at the Illinois State Archives, indenture records exist through 1863, or about half way through the war.
http://www.sos.state.il.us/departments/archives/servant.html
And that's just the tip of the iceburg for Illinois, which had one of the most complex system of Black Codes in the entire nation (and yes, they were called Black Codes in Illinois as early as the 1820's). Heck, in 1824 an Illinois Court even convicted its Governor for the "crime" of manumitting his slaves in violation of the state's Black Codes. In 1848 the Illinois Constitution made it illegal to bring blacks into Illinois for the purpose of setting them free. In 1853 it was made a crime in Illinois for any person to bring any free black across the state border. All the while, Lincoln sat in silence and declared his support of keeping Illinois "pure" as a land for free white people alone.
Not odd at all, given your usual level of scholarship. The Black Codes required any black or mulatto to prove his status as a free person and not a runaway slave. Any one unable to provide a proper certificate of his freedom was deemed a runaway slave and was subject to arrest. His arrest was advertised by the sheriff and, if no owner appeared, he was indentured for one year, at the end of which time he was entitled to a certificate of his freedom. But the indenture was for a year only, not your 'forever and a day' period.
And that's just the tip of the iceburg for Illinois, which had one of the most complex system of Black Codes in the entire nation...
No, they were rather straight-forward.
...and yes, they were called Black Codes in Illinois as early as the 1820's
A name later taken by the southern states.
Heck, in 1824 an Illinois Court even convicted its Governor for the "crime" of manumitting his slaves in violation of the state's Black Codes.
Again, total bullsh*t. Governor Coles's "crime" wasn't that he manumitted his slaves, something allowed by law, but that he had not posted the necessary bond. Any person bringing slaves into Illinois with a view towards emancipating them was required to execute a bond in the sum of one thousand dollars as a guaranty that the person emancipated would not become a county charge. Governor Cole did not, so he was fined $2000, two hundred dollars per freed slave.
In 1848 the Illinois Constitution made it illegal to bring blacks into Illinois for the purpose of setting them free.
Crap again. Here is a link to the text of the 1848 Constitution. It's a pdf so you need Acrobat. It says nothing of the kind.
All the while, Lincoln sat in silence and declared his support of keeping Illinois "pure" as a land for free white people alone.
I would imagine Lincoln would have kept silent. Most of what you said was wrong, the rest just ain't true. What was there to comment on?