Most US states and Canadian provinces have independent non-profit organizations that help adoptees and their birth parents initiate a search, and offers other adoption-related support. There are also independent and state funded reunion registries that facilitate reuniting family members. The International Soundex Reunion Registry (ISRR) is the oldest and largest. The Salvation Army also provides information in helping those who were born or gave birth in its maternity hospitals or homes (see the external links below). This is a change from previous decades, when nothing was ever released without a rarely given or sought court order.
In all adoption searches, it is uncommon to find both the birth mother and father at the same time. A separate search, if desired, can be done afterwards for the father. Since males seldom change their surnames, and the mother might have additional information, it is usually easier than the initial search for the birth mother. In many cases, adoptees are able to do this second search for their birth father by themselves (or they try before paying for assistance).