Type D. u. Rg. - Obersdorf is a Dorf und Rittergut (Village and Landed Estate).

Lvl I Pr. - Level I shows which Kingdom or State the place is located in. Obersdorf is located in Preussen.

Prov Brandbg. - The Province shows which Province or State the place is located in. Obersdorf is located in Brandenburg.

RB Frankfurt Oder - The Regierungsbezirk for Obersdorf is Frankfurt Oder. The Regierungsbezirk is a government district that is in hierarchy between the State and Kreis level.

BKdo Frankfurt Oder - The Bezirkskommando for Obersdorf is in Frankfurt Oder. The Bezirkskommando is the District Military Command. You can look in the BKdo to find military records.

Kr Lebus - The Kreis for Obersdorf is Lebus. A Kreis is a government district (similar to a U.S. county).

AG Münchenberg - The Amtsgericht for Obersdorf is in Münchenberg. The Amtsgericht is where the Lower District Court is located.

A Buckow - The Amtsbezirk for Obersdorf is Buckow. The Amtsbezirk is the District Office.

StdA Obersdorf 2) [self] - The Standesamt for Obersdorf is in itself. The Standesamt is where the Civil Registration Office is located.

ev. Pfk. 1 - Obersdorf has 1 evangelisch Pfarrkirche (Protestant parish church).

Vgl Oberstdorf - A Vgl (Vergleiche) notation lists places with similar spellings that you may want to compare. In this case, you may want to try searching for Oberstdorf.