In the 1880s, the north side of West 54th St. was dominated by the large campus of St. Luke's Hospital. The rest of the area consisted of respectable, but not particularly extravagant, brownstone rowhouses built after the Civil War. That began to change as John D. Rockefeller and other wealthy elites began building mansions along Fifth Ave. In 1896, the hospital was demolished, making many lots available and leading to the rapid development of mansions for the wealthy.
No. 35 was built in the Italianate style, and was originally owned by businessman Edward Scheitlin, an importer of hosiery and gloves. Dr. Allan M. Thomas, who had developed a proto-incubator for infants, purchased it shortly after 1900 and gave it a makeover, replacing the facade with an up-to-date Beaux Arts facade of brick and limestone.
In 1916, it was purchased by Walter Tower Rosen. Rosen was a lawyer and a banker, and also a pianist and art collector. His wife, Lucie Bigelow Dodge, was also a musician and a patron of the arts. Among the artists they supported was the Russian inventor Leon Theremin, inventor of the eponymous instrument. Now known primarily for 1950s retro Sci Fi soundtracks, the theremin was originally intended as a concert instrument for avant-garde music. Lucie performed as a part of a 10-person ensemble of theminists at Carnegie Hall in 1930.
Walter Rosen died in 1951; Lucie in 1968. In 1977, the mansion was converted to apartments.



















