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I am afraid that under the laws, you cannot get adoption information other than non identifying information because the records are sealed. The only way, as you were told, to get the information on your birth parents would be through going to court and proving some good cause that the records should be disclosed to you, absent consent of the birth parents to release the records, such as for medical history reasons if you have medical issues.
Legally I am afraid the courts are very strict on the unsealing of these records and will require good cause to do so and you would need a local attorney to file a petition in court specifying good cause for you to be allowed access to that information.
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