The Ella Reeve Bloor Papers consist of 5.5 linear feet of personal and professional correspondence, pamphlets, clippings, memorabilia, and printed ephemera. The documents span the years 1896 to 1979 and are particularly strong from the late 1910s through the early 1940s. This collection documents most major events of her life except those of her very early career and the investigation of the Chicago meat-packing industry for Upton Sinclair.

There is material throughout the collection related to both her family and many notable colleagues such as Earl Browder, Elizabeth Gurley Flynn, William Bross Lloyd, William Foster, Lem Harris, Bill Haywood, Paul Robeson and many others.

This collection is organized into six series:

• I. BIOGRAPHICAL MATERIAL
• II. CORRESPONDENCE
• III. SPEECHES AND WRITINGS
• IV. ORGANIZATIONS
• VI. PHOTOGRAPHS
• V. SUBJECT FILES
• OVERSIZE MATERIALS
• MICROFILM