[Frank, Anne. (1929–1945)] Frank, Otto. (1889–1980) Signed Photograph of Canals Outside the Hidden AnnexOriginal color polaroid photograph, ca. 1970s, of the Amsterdam canals outside the house where the Frank family hid for more than two years. The photograph has been signed to upper right by Anne Frank's father, Otto. Slightly faded, else fine. 3. 5 x 3. 5 inches (9 x 9 cm.). Together with halftone photographs of the annex where they lived and Anne's diary. Otto Frank, father of Jewish World War II diarist Anne Frank, was the only member of his family