. . . . . . . . . . . . "R. Ackermann" . . . . "Rudolph Ackermann" . "the firm of Ackermann" . "1834" . "Ackermann of the Strand" . . . . . . . "Ackermann's" . "Ackermann & Co" . . . . "Ackermann" . . . . . . . . . "Rudolph Ackermann" . . "1764" .