Consists of correspondence from various family members, primarily to Charles and Celia Rostoker.

The Dreyfus Collection contains material related to the Dreyfus Affair, specifically the publicity and commentary surrounding the trial. It consists of a collection of editorial cartoons, newspaper clippings, broadsides, photographs and drawings. The content represents both positions in support and against Alfred Dreyfus, some of which are explicitly antisemitic. The collection of postcards contains political cartoons and caricatures that were circulating at the time. Similarly, some of the posters represent the trial in a political manner. Newspaper clippings from the period are also included in the collection.

The file contains information pertaining to travel to Europe for research related to "The Gossamer Thread," with a concentration on France and England. Materials include pamphlets, lists, newspaper clippings, handbooks, correspondence introducing Lazarus to connections abroad, visa forms, and research on the respective countries.

Consists of biographical material, photographs, a first issue of LIFE magazine, correspondence, and blank postcards.

This file contains programs, printed e-mail exchanges, an identification collar, an issue of "Zamane" magazine and a plastic document folder for conferences in Aix-en-Provence and Marrakech.

File contains a bound book detailing the lives of holocaust survivors Paul and Trudy Sekely. It was written and compiled by their daughter Judi Olga Cahorn.