Lucie Bigelow Dodge was born in Bernardsville, New Jersey in 1890, and married the lawyer and banker Walter Tower Rosen in 1914.

[5] Sometime afterward, the Rosens offered Theremin the use of their 37 West Fifty-fourth Street townhouse at low rent.

By 1938 Leon Theremin needed money to return to Russia and, according to the Rosen's daughter Anne Stern, Walter offered him ten thousand dollars to create a new machine for Lucie together with all technical papers and rights to produce more for personal use only.

[10] In 1913 Lucie disappeared from her mother's home in London, resulting in a much publicized search involving Scotland Yard.

[11] They had two children, Anne and Walter; he was killed in 1944 on a bombing mission in England whilst serving with the Royal Canadian Air Force.