Ami (short for Amitai, ahh-mee-tie) Plasse is a super-prolific NYC native artist who compiled a collection of almost 2000 drawings of the moments and characters he encountered on his daily subway ride between Brooklyn and Manhattan from 2007-2011. The best are in this volume of Ami Underground.
A master class in subway sketching by Amitai Plasse. Captures all the diverse humanity in New York City on their way from point A to point B. Published by Nauset Press.