These are some books written by members of the meetup.
Drew Conway & John Myles White
Daniel Y. Chen
Andrew Gelman
David Robinson
Andrew Gelman & Jennifer Hill
Wes McKinney
Bryan Lewis and Michael Kane
Andrew Gelman & Jeronimo Cortina
JD Long
Rob Hyndman
John Myles White
Richard Cotton
Q. Ethan McCallum
Andrew Gelman, John B. Carlin, Hal S. Stern, David B. Dunson, Aki Vehtari & Donald B. Rubin
Harlan Harris, Sean Patrick Murphy & Marck Vaisman
Hadley Wickham
Jared P. Lander
Chris Fregly & Antje Barth
Jeroen Janssens
Max Kuhn & Kjell Johnson
Julia Silge & David Robinson
Paul Dix
Cathy O'Neil & Rachel Schutt
Tony Fischetti
Hadley Wichkam
Andrew Gelman & Deborah Nolan
Mike Dewar
JJ Allaire
Max Kuhn