The picture I sent is Prof. Dr. Adam Olt, living in Gießen and later in Berlin, a very important veterinarian doctor. He belongs to the old OLT-family

And the picture I send now is of Alex an American descendent of the OLT family

The picture of a letter from 1901 belongs to Elisabeth Olt, a cousin of my grandfather Peter Olt (he lived from 1887 to 1968)

R. Olt has informed