From EveryLibrary’s internships page:

Are you looking for an internship that makes a significant difference for libraries around the world and where you’ll learn to use cutting edge political advocacy tactics and strategies to help keep library doors open and help libraries secure funding? Do you also want to learn more about library funding issues and build the advocacy skills that just aren’t typically taught in most Master in Library Information Sciences (MLIS) programs? If so, then this internship is for you.

Check out their posts for their Data Internship, Donor Research and Cultivation Internship, Design and Visual Media Internship, Grant Writing Internship, Research Internship, Event Coordination Internship, Administrative Internship, Social Media and Digital Content Internship, Community Engagement and Volunteer Internship.

More information on each post, including qualifications and how to apply can be found here: EveryLibrary Internships