A community of practitioners of Torah Im Derech Eretz
That was on the occasion of a special shiur for the jahrzeit of Mr. Rosenberg from Washington Heights.
Thanks, do you know his first name?
"החבר ר’ יחיאל ב”ר יוסף ראזענבערג, Mr. Max Rosenberg, who was, as Rabbi Vachsman mentioned, the chairman of the board of directors of Yeshiva R. Shamshon Rafael Hirsch in Washington Heights, New York."From http://treasuresofashkenaz.wordpress.com/2011/04/10/the-development-of-kaddish-yasom-a-comprehensive-shiur-part-i/