Question: Who recorded an album at Österåker Prison and San Quentin Prison?

Context paragraphs:
George Jackson (song): "George Jackson" is a song by Bob Dylan, written in 1971, in tribute to the Black Panther leader, George Jackson, who had been shot and killed by guards at San Quentin Prison on August 21, 1971, during an attempted escape from prison.  The event indirectly provoked the Attica Prison riot.

The Impossible Itself: The Impossible Itself is a 2010 documentary film produced and directed by Jacob Adams to cover the 1957 San Francisco Actor's Workshop production of the Samuel Beckett stage play "Waiting For Godot" that was taken to San Quentin Prison and performed before its inmates, with an examination of an earlier incarnation of "Godot" as performed by inmates at the Luttringhausen Prison in Germany in 1953.

På Österåker: På Österåker ("At Österåker") is a live album by country singer Johnny Cash released on Columbia Records in 1973, making it his 43rd overall release.  The album features Cash's concert at the Österåker Prison in Sweden held on October 3, 1972.  Its counterparts in concept are the more notable "At Folsom Prison" (1968), "At San Quentin" (1969), and "A Concert Behind Prison Walls" (1976).  Unlike aforementioned, "På Österåker" does not contain any of Cash's most well-known songs; it does, however, include a version of Kris Kristofferson's "Me and Bobby McGee".  "Orleans Parish Prison" was released as a single, faring rather poorly on the charts.  Cash had previously recorded "I Saw a Man" for his 1959 album, "Hymns by Johnny Cash".

Kevin Cooper (prisoner): Kevin Cooper (born 1958) is a death row inmate currently held in California's San Quentin Prison.  Cooper was convicted of four murders that occurred in the Chino Hills area of California in 1983.  Since his arrest, Cooper, who is African American, has become active in writing letters from prison asserting his innocence, protesting racism in the American criminal justice system, and opposing the death penalty.

Österåker Prison: The Österåker Prison (Swedish: "Anstalten Österåker" , commonly known as "Österåkersanstalten") is a prison located in Österåker Municipality, thirty kilometers north of Stockholm, Sweden.  It is a Class C-security prison with a capacity for 146 inmates.  The facility also contains a remand prison with the capacity for 80 inmates.

A Concert Behind Prison Walls: A Concert: Behind Prison Walls is the fifty-fourth overall album and a live album recorded by Johnny Cash in the Tennessee Prison 1974.  The album features Cash with his backing band the Tennessee Three.  It also features a total of four performances by Linda Ronstadt, Roy Clark and Foster Brooks.  The album was not released until 2003.  A DVD companion of this show was also released.  "A Concert: Behind Prison Walls" is the fourth and final album of Cash's conceptual series of live albums recorded before an audience of prison inmates.  The other three are, chronologically, "At Folsom Prison" (1968), "At San Quentin" (1969) and "På Österåker" (1973).

California Reentry Program: The California Reentry Program (CRP) is a non-profit organization with the mission of helping California prisoners successfully reenter society.  It has operated in San Quentin State Prison since 2003 when Allyson West, an algebra teacher at San Quentin at the time, helped one inmate with the reentry process and realized the importance of reentry work and the lack of ability or interest of the state to reduce recidivism.  Working with San Quentin and recruiting volunteers, West founded the California Reentry Program which has helped several thousand prisoners so far.  CRP's mission is to help all California prisoners, but due to lack of resources, it only operates in San Quentin.  CRP incorporated in 2007 and received non-profit status in 2008.  CRP has roughly 25 volunteers and helps about 150-200 clients per month.

Women of San Quentin: Women of San Quentin is a 1983 TV movie about female prison guards at San Quentin Prison.  It stars Stella Stevens and Debbie Allen.

George Jackson (activist): George Lester Jackson (September 23, 1941 – August 21, 1971) was an African-American activist and author.  While serving a sentence for armed robbery in 1961, Jackson became involved in revolutionary activity and co-founded the Maoist-Marxist Black Guerrilla Family.  In 1970, he was charged, along with two other Soledad Brothers, with the murder of prison guard John Vincent Mills in the aftermath of a prison fight.  The same year, he published "Soledad Brother: The Prison Letters of George Jackson", a combination of autobiography and manifesto addressed to a black American audience.  The book would become a best-seller and earn Jackson personal fame.  In 1971, Jackson took several guards and two inmates hostage in a bid to escape from San Quentin Prison.  However, the incident ended with Jackson being shot and killed by a guard, in addition to the deaths of 5 hostages.

At San Quentin: At San Quentin is the 31st overall album by Johnny Cash, recorded live at San Quentin State Prison on February 24, 1969 and released on June 4 of that same year.  The concert was filmed by Granada Television, produced and directed by Michael Darlow.  The album was the second in Cash's conceptual series of live prison albums that also included "At Folsom Prison"(1968), "Pa Osteraker"(1973), and "A Concert Behind Prison Walls"(1976).

Supporting paragraphs: På Österåker At San Quentin
Answer: Johnny Cash