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