At least 15 color slides have survived from Asperg. The pictures show the march to the assembly camp in Hohenasperg Fortress, the stay in the courtyard, and the train’s departure. The photos span the 6 days between arrest, arrival at the assembly camp, and deportation. Only the first and last photos of the series can be placed in this chronological sequence with certainty. The high number of children among the deportees is striking. All the pictures were taken outdoors. No photographs of the preceding arrests or of the degrading examinations and procedures at the assembly camp have survived. The documentary and bureaucratic character of the images is striking from a stylistic point of view. Maybe the photos were taken to supplement the report on the deportation written by the criminal investigations police in Darmstadt. The prominent place given to police officers armed with guns in several of the pictures lends credence to this idea.

The photos have been preserved at the Bundesarchiv (Federal Archives) in collection R 165, the files of the "racial hygiene and criminal biological research center of the Reich health service.” They are part of a larger collection which includes many photographs. The photos were in the estate of Robert Ritter, the head of this institution, which played an important role in the persecution of Sinti and Roma. However, it is particularly difficult to retrace the provenance of collection R 165, not all of which has been preserved. Most notably, the "expert opinions" of the research center have disappeared or been destroyed. After 1945, some parts of the files were used by the police and by private and university researchers. In 1981, the civil rights movement of the Sinti and Roma occupied the archives of Tübingen University to enforce their demand that the extant files be incorporated into the holdings of the Bundesarchiv.