EarlyWord provides this easy linked list of all of the publishers and their library marketing team pages, where applicable.
Please remember to visit them virtually. They are all still writing newsletters, offering links that will be helpful to you and your patrons, and providing content you can push out to your patrons.
I plan to be back next week with original content including ideas on projects you can all do from anywhere to keep RA Service going and actually improve it in the long run.
Have a good weekend and stay safe.