Portrait Friedrich Koch
at the age of 4. Inscribed OWR (Ottilie Roederstein) with date under the signature.
Laqueur: "Friedrich was wearing a blue Russian blouse".
Koch: "Friedrich Koch three year old boy, dark blond round head, blue smock, standing, half profile tempera, under glass, gold frame."
WVZ: "1251 FIFTH CHILD OF PROF. DR. RICHARD KOCH (c. 1922); painting; (whereabouts unknown, former private property Frankfurt a. M., owner moved to Russia in 1933) (Jug. nr. c. 1922-25)"
Richard Koch: Liste unserer während der Okkupation von Essentuki im Kaukasus von den Deutschen August 1942 bis Januar 1943 verschwundenen Bilder. S.1-3. In: US - LBI, Richard Koch collection, Series II, Box 6, Folder 11, Reminiscences, 1942-1946.; Naomi Laqueur: Memoris. Privatdruck 1995. S.25.; Barbara Rök: Ottilie W. Roederstein (1859–1937). Eine Künstlerin zwischen Tradition und Moderne. Werkverzeichnis auf CD-ROM, Marburg 1999. Kat. Nr. 1251.; US - NARA M1946. Administrative records, correspondence, denazification orders, custody receipts, property cards, Jewish restitution claim records, property declarations, and other records from the Munich CCP. Roll 48. Restitution Claim Records. Jewish Claims, Numbered: 0086-0092. Claim J 0091. Blatt 165.