WONDRACK surname

Hello fellow CGSIers,

I am trying deserately to locate anything on the name WONDRACK. An individual, August WONDRACK, filed during the WW 2 Draft Registration. He lived in NY from ca. the early 1920’s to July 1943 when he gave an address of 542 Bush St in San Francisco. I have checked every known database and have work the keys our for Ancestry.com but cannot find anyhing on this person. His WW 2 DR only says Bohemia for his place of birth. There is no record in NARA for his arrival in any east coast port of arrival nor any naturalization document in any of the courts of New York. I cannot find him in the 1930 Federal Census, but he is in a 1922-23 NYC Directory. He is not in the SSDI, NYC or California Death Indices. Any suggestions will be VERY greatly appreciated. Thank you very much in advance.