The Collaborative Summer Library Program (EIN: 42-1519652) is a nonprofit organization dedicated to promoting reading and literacy through the development of adaptable summer reading resources and programs in collaboration with library professionals. With an operating budget of $2.1 million and total revenue of $2.4 million for the filing year 2025, the organization relies on diverse funding sources, with no single funder contributing 50% or more of its revenue. More information can be found on their website at https://cslpreads.org.