companion pieces
Gravity's Rainbow, Domination, and Freedom by Luc Herman and Steven C. Weisenburger
http://www.amazon.com/Gravitys-Rainbow-Domination-Freedom-Herman/dp/0820345954
A Gravity's Rainbow Companion: Sources and Context for Thomas Pynchon's Novel by Steven C. Weisenburger
http://www.amazon.com/Gravitys-Rainbow-Domination-Freedom-Herman/dp/0820345954
Pictures Showing What Happens on Each Page of Thomas Pynchon's Gravity's Rainbow by Zak Smith
http://www.amazon.com/Pictures-Showing-Happens-Pynchons-Gravitys/dp/0977312798/ref=sr_1_2?ie=UTF8&qid=1401413365&sr=8-2&keywords=gravity%27s+rainbow+companion
http://www.amazon.com/Gravitys-Rainbow-Domination-Freedom-Herman/dp/0820345954
A Gravity's Rainbow Companion: Sources and Context for Thomas Pynchon's Novel by Steven C. Weisenburger
http://www.amazon.com/Gravitys-Rainbow-Domination-Freedom-Herman/dp/0820345954
Pictures Showing What Happens on Each Page of Thomas Pynchon's Gravity's Rainbow by Zak Smith
http://www.amazon.com/Pictures-Showing-Happens-Pynchons-Gravitys/dp/0977312798/ref=sr_1_2?ie=UTF8&qid=1401413365&sr=8-2&keywords=gravity%27s+rainbow+companion
reviews
New York Times (1973)
http://www.nytimes.com/books/97/05/18/reviews/pynchon-rainbow.html
Bookforum
http://www.nytimes.com/books/97/05/18/reviews/pynchon-rainbow.html
Conceptual Fiction
http://www.conceptualfiction.com/gravitys_rainbow.html
Zouch Magazine
http://zouchmagazine.com/gravitys-rainbow-by-thomas-pynchon/#.U4Pm4vldWSo
Blog Critics
http://blogcritics.org/book-review-gravitys-rainbow-by-thomas/
http://www.nytimes.com/books/97/05/18/reviews/pynchon-rainbow.html
Bookforum
http://www.nytimes.com/books/97/05/18/reviews/pynchon-rainbow.html
Conceptual Fiction
http://www.conceptualfiction.com/gravitys_rainbow.html
Zouch Magazine
http://zouchmagazine.com/gravitys-rainbow-by-thomas-pynchon/#.U4Pm4vldWSo
Blog Critics
http://blogcritics.org/book-review-gravitys-rainbow-by-thomas/
Blogs
Thomas Pynchon Wiki
http://gravitys-rainbow.pynchonwiki.com/wiki/index.php?title=Main_Page
Mindful Pleasures Literary Blog
http://mindfulpleasures.blogspot.com/2009/06/gravitys-rainbow-by-thomas-pynchon-part_04.html
http://gravitys-rainbow.pynchonwiki.com/wiki/index.php?title=Main_Page
Mindful Pleasures Literary Blog
http://mindfulpleasures.blogspot.com/2009/06/gravitys-rainbow-by-thomas-pynchon-part_04.html
book Trailer
where to find
Gravity's Rainbow is widely available at most book stores and online
Barnes and Noble
http://www.barnesandnoble.com/w/gravitys-rainbow-thomas-pynchon/1102478934?ean=9780143039945
Amazon
http://www.amazon.com/Gravitys-Rainbow-Penguin-Classics-Deluxe/dp/0143039946
Penguin Publishers
http://www.penguin.com/book/gravitys-rainbow-classics-deluxe-edition-by-thomas-pynchon/9780143039945
Barnes and Noble
http://www.barnesandnoble.com/w/gravitys-rainbow-thomas-pynchon/1102478934?ean=9780143039945
Amazon
http://www.amazon.com/Gravitys-Rainbow-Penguin-Classics-Deluxe/dp/0143039946
Penguin Publishers
http://www.penguin.com/book/gravitys-rainbow-classics-deluxe-edition-by-thomas-pynchon/9780143039945