I remember that birth cirtificate and how it said black and they all claimed in that time the word negro would have been used to describe Obama's race. Now they easiely could have used original paper by soaking it in a bath or the stuff they use to erase the ink on personal checks so they can rewrite it to a much larger amount. Now the way to fill it out was just find an old typewriter with a working ribbon of original ink and then age it with heating it slowly in a drying over that will dry the ink and age it without burning the paper then dirty it up a bit like it's been filed for decades plus the erase paper still would have the creases from moving around in a folder. This is easier than faking antique furniture just need to take it carefully step by step and might be the 6th copy they did or more learning from each mistake they made earlier. Just can't use white out or erase the ink so new copies and a lot of time including lining up the paper and the area's to fill in properly and that takes practice no matter how carefully they were there would still be minor errors but not one person thought of the past and negro would have been normal not a one time insult just how things were done back then.