The collection consists of 454 genealogical charts, with a few additional related documents. These are all photocopies. The originals are apparently still in the possession of Dueck. The charts have also been microfilmed by the Kansas Historical Society. The photocopies were apparently made by Hermann Schirmacher (b. 1967) of Leopoldshöhe, Germany. Schirmacher transferred them to the MLA in mid-2001. Digitized at http://mla.bethelks.edu/archives/ms_482/
