I have a Jacob Zipf (1860-1924)and Marie E. Zipf (1861-1926) both born in Germany. They had a daughter Margaret Zipf who was born 1886-1953 born in NY. Supposedly there was a sister Tess Zipf who married Oscar Hiedelberger. They lived on Onderdonk Avenue in Ridgewood Queens in 1930. Does anyone out there have info on the Zipf family?