Yvonne Klein was communications director of the Clarksdale COFO office during Freedom Summer.
Archival Collections and Reference Resources
- Freedom summer digital collection (Wisconsin Historical Society)
- Belfrage--Location file: Clarksdale, 1964, June-August (Sally Belfrage papers, 1962-1966; Historical Society Library Microforms Room, Micro 599, Reel 1, Segment 13) (Legal documents)
- CORE--Council of Federated Organizations (COFO) - Memoranda and reports, 1964-1965 (Congress of Racial Equality. Mississippi 4th Congressional District records, 1961-1966; Historical Society Library Microforms Room, Micro 793, Reel 2, Segment 19) (Minutes (administrative records))
- Freedom Information Service--Miscellaneous reports and news releases, 1962-1965, undated (Freedom Information Service Records, 1962-1979; Historical Society Library Microforms Room, Micro 780, Reel 3, Segment 2) (Reports)