The Collaborative Summer Library Program (CSLP) is a grassroots consortium of states working together to provide high-quality summer reading program materials for children at the lowest cost possible for their public libraries.

By combining resources and working with a exclusive contracted vendor to produce materials designed  for CSLP members, public libraries in participating states or systems can purchase posters, reading logs, bookmarks, certificates and a variety of reading incentives at significant savings.

The participating systems and states develop a unified and high-quality promotional and programming product. Participants have access to the same artwork, incentives and publicity, in addition to an extensive manual of programming and promotional ideas.

CSLP began in 1987 when ten Minnesota regional library systems developed a summer library program for children, choosing a theme, creating artwork and selecting incentives that public libraries in the regions could purchase and use. State libraries and systems continue to join and CSLP continues to evolve, but its guiding principle remains the same, librarians sharing ideas, expertise and costs to produce a high-quality summer reading program for children.