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