This series is comprised of material relating to Ella Reeve Bloor and some of her family members. It includes invitations, published programs, brochures, writings about Bloor, the scrapbook from her 80th birthday tour in 1842, letters of condolence, and tributes from 1936 to 1962. Of the clippings, those from the 1930s are especially interesting because they document her midwestern organizing activities and her arrest in 1935. Other significant items include a short diary entry, handbills, advertisements, the warrant for her arrest in 1920, itineraries from the 1920s to 1942, and her FBI file.

The biographical material regarding various family members includes Andrew Omholt's obituaries, Carl Reeve's birth certificate, and a written report by his daughter, Carla. There is also printed material about Bloor's son, Hamilton Disbrow Ware, her daughter, Helen Ware, and Helen's daughter, Herta Geer. There are two folders of material related to Harold Ware with some reports and articles from his files.

This series is organized in two sections, Family and Friends and associates.

Both sections contain outgoing correspondence from Bloor and incoming correspondence from family, friends and associates, and between family members. The letters to her family were written during her extensive travels. In these letters she describes the people she encountered and the events in which she was involved. For example, there are detailed accounts of early organizing efforts on behalf of Michigan miners in 1928 and farmers in the Dakotas from 1930 to 1933. Also of interest are her letters describing her campaigns against the executions of Sacco and Vanzetti in 1927 and against fascism during the second World War. Other interesting accounts concern her trips to Russia in 1921-22 and 1937, her 1925 hitchhiking tour for the Daily Worker, and her arrest in Omaha in 1935. The activities of Carl Reeve and Harold Ware, also devoted communists, are documented in their letters.

While Bloor's correspondence between with her friends and associates is not particularly voluminous with any single individual, a wide variety of noted radicals are represented. Her correspondents include Elizabeth Gurley Flynn, Earl Browder, William Bross Lloyd, William Foster, Lem Harris, Bill Haywood, Woody Guthrie, Scott Nearing, Kate Richards O'Hare, Paul Robeson, Anna Louise Strong, Norman Thomas, Anita Whitney, Emmet "Pat" Cush, and others.

This series contains a small number of manuscript notes and speeches as well as a photocopy of Bloor's Talk about Authors and Their Works (1899). Of particular interest are the handbills and advertisements for Bloor's speaking engagements between 1916 and 1942.

This series is largely comprised of correspondence and printed material from a number of organizations directly related to or affiliated in some way with the labor, communist, and socialist movements in the United States. With the exception to the material pertaining to the Communist Party, the bulk of this material represents Bloor's involvement in organizations between 1918 and 1921.

This series contains printed material, newspaper clippings, and correspondence Bloor collected on subjects such as the Soviet Union and the philosophy and practice of conscientious objection to war.