Anyone have any good book recommendations on the unhoused, organizing unhoused folks, theory around unhoused praxis?

Want to learn more about what has worked elsewhere in helping to organize for this community. There are so many non-profits/NGO's devoted to assisting our unhoused neighbors but so many of them seem largely uneffective/toothless (for many reasons).

Looking to see if there are any good reads out there about lifting up this community. thanks!