Smithsonian InstitutionThe William Steinway Diary: 1861-1896
Steinway & Sons Records and Family Papers, Archives Center, National Museum of American History
"Ecce Quam Bonum" is the Latin title of Psalm 133 from The Books of Psalms. Ecce quam bonum et quam jucundum habitare fratres in unum: "Behold how good and how pleasant it is for brethren to dwell together in unity."