The was one of the short paperback cookbooks published in the early 1970s by Nitty Gritty Cookbooks.
I particularly loved the Kale paneer (or whatever they called it) and their Tamarind/Date chutney which started w/ block tamarind & added only dates and a couple of spices--no extra sugar or vinegar. The Kale paneer was so good that an Indian graduate student dinner guest kept pressing me for the recipe even after I told him that it was probably not for someone like himself who did not like to spend a long time cooking. Though simplified, the dishes used authentic ingredients like whole black mustard seeds--no commercial curry powder. When I had it I didn't realize how rare that combination of simplicity and authenticity was in Indian cookbooks, or that the recipes couldn't be found elsewhere.
I lost it many years ago in a move, and could never find another. I've already tried abebooks, bookfinder.com, and Alibris. Even the publishing house which acquired Nitty Gritty has no record or copy of that book.