Series consists of Lehmann’s published book reviews, both in manuscript form and as journal clippings or off-prints. The files are arranged alphabetically by journal-title.

Series consists of correspondence primarily between Lehmann and other historians, friends, and railway enthusiasts/organizations. In addition, some correspondence in file 5-49 dates after his death and is addressed to Joanna Lehmann. The files are arranged alphabetically by correspondent.

Series consists of textual materials used by Lehmann in developing and teaching his courses, including lecture materials, course hand-outs, and papers written by students. The files are arranged by course number.

Fonds consists almost entirely of textual materials created or acquired by Fritz Lehmann, in both his professional and personal capacities. The materials include research notes, lecture materials, course hand-outs, manuscripts of articles and book reviews, research papers written by students, correspondence, reports, newspaper and magazine clippings (original and photocopied), and research grant applications. Also included are a folder of tributes written after Lehmann's death, and some personal correspondence addressed to Joanna Lehmann.
The fonds is arranged in the following series: Lecture Materials, Indian railways Correspondence and Research, Course Materials, Correspondence, Publications, Book Reviews, Personal, and Research Grants and Applications. These series largely reflect the original order in which the fonds was acquired. Most materials are arranged in chronological order, to reflect the evolution of Lehmann's teaching and research interests and activities.

Series consists of textual materials Lehmann created or acquired in his research on the history of railways in India. The materials include correspondence, research notes, and newspaper and magazine clippings. The files are arranged in chronological order.

Series consists of textual materials created or acquired by Fritz Lehmann in the course of his teaching duties. The materials include research notes, lecture materials, course hand-outs, copies of research papers written by students, and newspaper and magazine clippings. It is arranged in the following sub-series: General, Medieval India / Mughal Empire, British India / India Since 1947, India / South Asia, East Asia, Islam, Africa, and Modernization (History 202). These sub-series largely reflect the original order in which the fonds was acquired.

Series consists primarily of textual materials that were created or acquired by Lehmann during both his professional and personal activities and include correspondence, reports, lecture materials, and newspaper and magazine clippings (original and photocopied). Also included are tributes to Lehmann prepared for his 1994 memorial service. The files are arranged in chronological order.

The series consists of copies of Lehmann's published articles in manuscript form and as journal clippings or off-prints. The files are arranged alphabetically by article title.

Series consists of copies of grant applications submitted by Lehmann to support his research, including supporting documentation and correspondence. The files are arranged in chronological order.