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