1)Autographed manuscript by Bamberger, an essay on letter-writing, n.d., n.p. 18 p. - 2)Letter from Caroline A.Hinrichsen from Bradford, Springfield House, 1893-630, 4 p., to Bamberger? With nine leaves excerpt from Chambers encycl., on toast. 3)Letter Rosenbaum & Hart, Berlin, 1896-7-8, to Dr.Paul Nathan, 1. p., on sale of B.'s Schriften
