Responses
I received a dichotomy of reactions to my writing today: four good reviews of the work, and a rejection from the publisher who had requested the reviews. That's fine; I'm resolved to publish this myself. The text is a particular view of a particular topic, and the book isn't going to have the level of mainstream acceptance that can warrent a large publisher making money off it (in fact, I'm not sure a small publisher would make any money off it either).
So, on to self-publishing.