Question: Which singer from the Almanac Singers was also blacklisted during the McCarthy Era?

Context articles: Ben Barzman
Ingo Preminger
Deep Sea Chanteys and Whaling Ballads
Paul Robeson
Mickey Knox
The Sleeping Tiger
Abraham Polonsky
Almanac Singers
Pete Seeger
Vern Partlow

Ben Barzman (October 12, 1910 – December 15, 1989) was a Canadian journalist, screenwriter, and novelist, blacklisted during the McCarthy Era and best known for his screenplays for the films "Back to Bataan" (1945), "El Cid" (1961), and "The Blue Max" (1966).
Ingwald "Ingo" Preminger (25 February 1911 in Czernowitz, Austria-Hungary (now Chernivtsi, Ukraine) – 7 June 2006 in Pacific Palisades, California) was a film producer.
 He was also the literary agent for several writers, including Dalton Trumbo and Ring Lardner Jr., both of whom were blacklisted in the McCarthy era.
 He was brother of actor-director-producer Otto Preminger.
Deep Sea Chanteys and Whaling Ballads are two albums recorded then combined for release as a 1941 album by the Almanac Singers.
 The lineup of the group at the time was Millard Lampell, Lee Hays, Woody Guthrie and Pete Seeger.
 The group received a $250 advance for both albums and bought a Buick for a cross-country tour.
Paul Leroy Robeson (pronounced ; April 9, 1898 – January 23, 1976) was an American bass singer and actor who became involved with the Civil Rights Movement.
 At Rutgers College, he was an outstanding American football player, and then had an international career in singing, with a distinctive, powerful, deep bass voice, as well as acting in theater and movies.
 He became politically involved in response to the Spanish Civil War, fascism, and social injustices.
 His advocacy of anti-imperialism, affiliation with communism, and criticism of the United States government caused him to be blacklisted during the McCarthy era.
Abraham "Mickey" Knox (December 24, 1921 − November 15, 2013) was an American actor with nearly 80 films to his credit.
 He was also a screenwriter, film producer and novelist.
 Blacklisted during the McCarthy era, he moved to Paris and Rome to work.
 His screenwriter credits where he adapted approximately 150 Italian and French into English translations include the English adaptation of Sergio Leone's "The Good, the Bad and the Ugly".
 As a dialogue director he coached many non-English speaking actors in performing convincingly in the English language.
The Sleeping Tiger is a 1954 film noir starring Alexis Smith and Dirk Bogarde.
 It was Joseph Losey's first British feature, which he directed under the pseudonym of Victor Hanbury due to being blacklisted in the McCarthy Era.
Abraham Lincoln Polonsky (December 5, 1910 – October 26, 1999) was an American film director, Academy-Award-nominated screenwriter, essayist and novelist, blacklisted by the Hollywood movie studios in the 1950s, in the midst of the McCarthy era.
The Almanac Singers was an American New York City-based folk music group, active between 1940 and 1943, founded by Millard Lampell, Lee Hays, Pete Seeger, and Woody Guthrie.
 The group specialized in topical songs, mostly songs advocating an anti-war, anti-racism and pro-union philosophy.
 They were part of the Popular Front, an alliance of liberals and leftists, including the Communist Party USA (whose slogan, under their leader Earl Browder, was "Communism is twentieth century Americanism"), who had vowed to put aside their differences in order to fight fascism and promote racial and religious inclusiveness and workers' rights.
 The Almanac Singers felt strongly that songs could help achieve these goals.
Peter Seeger (May 3, 1919 – January 27, 2014) was an American folk singer and social activist.
 A fixture on nationwide radio in the 1940s, he also had a string of hit records during the early 1950s as a member of the Weavers, most notably their recording of Lead Belly's "Goodnight, Irene", which topped the charts for 13 weeks in 1950.
 Members of the Weavers were blacklisted during the McCarthy Era.
 In the 1960s, Seeger re-emerged on the public scene as a prominent singer of protest music in support of international disarmament, civil rights, counterculture, and environmental causes.
Vern Partlow (May 25, 1910 – March 1, 1987) was an American newspaper reporter and folk singer who was blacklisted during the McCarthy era.
 He composed the popular satirical song "Old Man Atom," which was famously banned during the period.
 It is considered one of the first anti-nuclear songs of the post-war era.