About Independent Book Publishers Association (IBPA)
From the site:
IBPA is a non-profit membership trade association tasked with serving and leading the independent publishing community by providing advocacy, education, and tools for success. With nearly 3,000 members, we are the largest publishing trade association in the US. In short, we make it easier to navigate the sometimes intimidating world of independent publishing while balancing the needs of hybrid physical and digital book creation and distribution.
In addition to our cooperative marketing and education programs, IBPA delivers valuable discounts and networking opportunities for book publishing professionals.