A plea for a release Ryfka Grünberg's husband from prison

A plea for a release from prison of Ryfka Grünberg's husband Selig, a shoemaker, who was arested due to an accusation of espionage found in an anonymous letter.
The National Archives in Krakow
Fonds: C.K. Dyrekcja Policji w Krakowie 1849-1919
Signature: DPKr 101
Page/Card Number: L.238/pr/15
Language: Polish
Creation Date: 1915
Place of origin: Kraków
Geographical names: Cracow
Organizations and institution: Imperial and Royal Directorate of Police in Krakow