 By 1852 they had expanded to 4, 6, 8, 9 and 11 Eutaw streets.Knabe & Gaehle won first premiums for square pianos from the Maryland Institute for the Promotion of Mechanic Arts in 1848, 1849 and 1850, as well as for grand pianos in 1849.In 1852, the company reorganized as Knabe, Gaehle & Co. with the admission of Edward Betts as partner, and by 1853 advertised their establishment was the largest in the South, employing over 100 workmen.