The book is Producing Jazz: The Experience of an Independent Record Company, by Herman Gray, now emeritus professor of sociology at the University of California-Santa Cruz. It's a small monograph published in 1988 (Temple Univ. Press), when Gray was a young scholar interested in independent cultural production -- though much of the initial research was conducted in 1983, when Gray was a grad student. Though the writing is a bit flat and academic, it is truly a remarkable document, opening a window on a corner of the jazz record business on the ground, at a particular moment and in real time. It proved invaluable to me in writing the notes for the forthcoming Sanders set, particularly because both co-owners of Theresa, Allen Pittman* and Kazuko Ishida, are now deceased and the details of the company's history and Sanders' involvement, including direct quotes from Sanders himself, would have otherwise disappeared into the ether. I spoke with Gray in the course of writing and he was quite amazed and proud (as he should be) that after all these years, his early work was being recognized and recirculated to a wider audience.
*Note correct spelling of Allen with an "e."