| תיאור | שנה | סימול | |
|---|
| Jewish Colonial Trust (JCT) Minutes of meetings, reports and letters from Theodor Hirsch and Hermann Neumann to Wolffsohn (August-September 1904) | 1904- 1904 | W1\835 | |
| Jewish Colonial Trust (JCT) Minutes of meetings, reports and letters from Theodor Hirsch and Hermann Neumann to Wolffsohn (June-July 1904) | 1904- 1904 | W1\834 | |
| Jewish Colonial Trust (JCT) Minutes of meetings, reports and letters from Theodor Hirsch and Hermann Neumann to Wolffsohn (January-April 1909) | 1909- 1909 | W1\853 | |
| Jewish Colonial Trust (JCT) Minutes of meetings, reports and letters from Theodor Hirsch and Hermann Neumann to Wolffsohn (May-September 1909) | 1909- 1909 | W1\854 | |
| Jewish Colonial Trust (JCT) Minutes of meetings, reports and letters from Theodor Hirsch and Hermann Neumann to Wolffsohn (October 1909-March 1910) | 1909- 1910 | W1\855 | |
| Letters to Wolffsohn mainly concerning Zionist affairs: G - H | 1912- 1912 | W1\661 | |
| Letters to Wolffsohn mainly concerning Zionist affairs: I - K | 1912- 1912 | W1\662 | |
| Letters to Wolffsohn mainly concerning Zionist affairs: L - P | 1912- 1912 | W1\663 | |
| 60 letters from Hermann Rothstein (Aachen), mainly concerning business affairs | 1912- 1912 | W1\665 | |
| Letters to Wolffsohn mainly concerning Zionist affairs: A - E | 1914- 1914 | W1\677 | |
| Letters to Wolffsohn, mainly concerning Zionist affairs: S - U | 1914- 1914 | W1\682 | |
| Letters from Adolf Friedemann | 1899- 1905 | W1\689\1 | |