 Ernest J. Knabe died in 1927, and William Knabe died 1939.In 1927 Wm.Knabe & Co. removed their New York warerooms from 437 Fifth avenue at 39th street to 657 Fifth avenue, corner of 52nd Street, and in 1928 moved to Ampico Tower at Fifth avenue and 47th street as part of American Piano Co.'s move to consolidate the sales of all their brands in an unsuccessful attempt to make up for a sharp decline in profits.