Is there a place in the National Archives that holds the original 42 birth certificates?"
You know better. Only Arthur was seriously challenged and he was either legit or successfully pulled of his fraudulent usurpation. [I hold no opinion as to which case might be the true one] Obama hasn't proven his eligibility, nor has his fraudulent usurpation been thus far successful. Different principles, different technology, different era. The fact that it isn't fair doesn't mean we have to roll over for one fraud because another had a lower threshold to cross. You cannot create a precedent through fraud (at least not if they catch you).
If the Berg Case ever goes before the SCOTUS, which it will not, Obama will claim protection under the Equal Protection Clause in that he is being held to a higher scrutiny than previous presidents. He would likely win.