{"value"=>"Service copies of Zwickler's videotapes were made from the original 3/4\" U-matic source tapes in the Phil Zwickler Papers, Rare and Manuscript Collections, Cornell University Library, Ithaca, NY. Guide to the Zwickler Papers available at http://rmc.library.cornell.edu/EAD/htmldocs/RMM07564.html. See also: Phil Zwickler Charitable and Memorial Foundation website (http://pzfoundation.org/) devoted to Zwickler's life and work."}