Detail
Type Ein. - Mittelmühle is a Einöde (Outlying Farm).
BA Erlangen - The Bezirksamt for Mittelmühle is Erlangen. The Bezirksamt is the District Office.
See Eltersdorf - A See notation means the entry is dependent on another entry. In this case, Mittelmühle is dependent on Eltersdorf, which should be consulted for additional information.