'New Yorker' writer Jane Kramer speaks with WTTW's John Callaway in 1978.
The "mother of environmental justice" discusses pollution in her Chicago community.
Caroll Spinney, the performer of Big Bird and Oscar the Grouch, on Chicago Tonight in 2003
Renowned composer Aaron Copland is interviewed in 1981 on WTTW's Callaway Interviews.
Nobel Prize-winning physicist Leon Lederman explains quarks in a 1979 interview.
Jim Jacobs, who co-wrote 'Grease,' discusses its various transformations and popularity.
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