Extremely rare named KZ dachau portrait grouping

Extremely rare named KZ dachau portrait grouping. 4 portraits with Karl Fröhler in his Totenkopf and SS Deutschland uniform. One portrait is dated 1935 SS Scharführer Otto Fröhler KL Dachau 19 6 35, with both the black uniform portraits taken at Rotthalmünster near the Austrian border. The Totenkopf portraits with one having the Dachau Photo-Sessner stamp. Otto Fröhler is named in a book written by a German inmate of Dachau.
https://oops.uni-oldenburg.de/653/37/oerals99.pdf

Fröhler ist listed as a kitchen guard and his way of treating the inmates is written down narrowly in the book.

Very high quality pictures with a story to them.