Abstract This article, the third in a series of columns devoted to sources and methods for cryptologic history, profiles the William and Elizebeth Smith Friedman Collections at the George C. Marshall Research Library. After providing an overview of how the Friedmans assembled their collections, the article details their scope and organization and notes the inventories, guides, and finding aids that they and others have compiled over the years. A number of digitized documents are identified, as are other notable items in each collection. A final section offers brief description of other sources of information about the Friedmans.

中文翻译：

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密码学历史的来源和方法：威廉和伊丽莎白史密斯弗里德曼收藏

摘要 本文是专门介绍密码学历史来源和方法的系列专栏中的第三篇，介绍了乔治 C. 马歇尔研究图书馆的威廉和伊丽莎白史密斯弗里德曼收藏。在概述了弗里德曼夫妇如何组装他们的藏品之后，这篇文章详细介绍了他们的范围和组织，并指出了他们和其他人多年来编制的清单、指南和查找辅助工具。确定了许多数字化文件，以及每个馆藏中的其他值得注意的项目。最后一部分简要介绍了有关弗里德曼家族的其他信息来源。