At this time only the French company of Gavioli had an office established in North America, but the move deterred other European organ manufacturers from doing the same.

The cylinder pins lifted levers which opened valves to a pneumatic mechanism which operated the piano.

First shown at the 1901 Pan-American Exposition, the Tonophone won a gold medal at the exhibition, and went on to be a commercial success.

This allowed de Kleist to buy Armitage Herschell out, and seek new investment from his association with Wurlitzer.

After his term as mayor ended, suffering from ill health, de Kleist retired to Berlin in 1911, dying in Biarritz, in 1913 from a heart attack.

During the Great Depression leading up to the end of production of organs, various cost-cutting measures were made, such as the substitution of brass horn and trumpet pipes for ones made of wood (though arguably, the brass pipes produced a shrill and unpleasant sound, thus causing the change to the mellower wooden sound).

Today the building is now home to a wide array of tenants, ranging from high visibility tenants like Platters Chocolates and Woodcock Brothers Brewing Company to various light industrial, high technology, and commercial businesses, lawyers' offices, and a medical billing company.