It’s important to keep in mind that, while adoption relationships can change, it is more complicated to increase contact than to decrease it. If a birth mother starts with an open relationship and then decides later that she needs distance, she can do this at any time. However, if an adoption is closed and a birth mother wants more contact, then she has to come to an agreement with the adoptive family. Therefore, it is especially important that a birth mother choosing closed adoption is sure that it is what she wants.
Unfortunately, there are situations where an open adoption is either not an option or is not the best choice for the child. Some birth parents do not want an open adoption because they are afraid that the ongoing contact will be a constant reminder of the painful decision they made at a difficult time in their life. They may believe that a closed adoption will better allow them to emotionally heal. Other birth parents have not shared the fact of their pregnancy with their family or community and they may fear that an open adoption will undermine their desire for confidentiality. Finally, there are times when open adoption is not in the child’s best interest due to the birth parents’ circumstances.
The probate laws of most states in the U.S. prohibit an adoptee from automatically inheriting from his or her birth parents. This applies regardless of whether or not the birth father participated in or agreed to the adoption. Had the adoption not have taken place, any son or daughter would be an heir upon his or her father's death—regardless of who his childhood caretakers were. There can be additional complications if the birth father has subsequently moved to another state. Should a birth parent include an "unknown" adoptee in his or her will, the probate court has no obligation to fulfill this type of request, while "known" adoptees may have the same status as non-family members. However, there is some variation in probate laws from one state to another.
Locate the county you were adopted in and contact the county clerk. She will be able to tell you the process of seeking access to your sealed adoption records. There may be certain restrictions and varying orders of procedure--such as a rule that you must be of legal age to make the request on your own--but you will have to go to court no matter what, and the process for arranging that appointment is by filing a petition.
There are also private search companies and investigators who charge fees to do a search for or assist adoptees and birth mothers and fathers locate each other, as well as to help other types of people searching. These services typically cost much more, but like search organizations and search angels, have far greater flexibility in regards to releasing information, and typically provide their own intermediary services. However, they may not circumvent the law regarding the confidentiality process.