The J.P. Hendrickson Papers are composed of material collected by Hendrickson in connection with his work on constitutional reform in South Dakota and his contributions to local government in Brookings. The collection spans from 1885 to 2002, with the bulk of the material dating from 1968 to 1998. Included are commission documents, reports, minutes, drafts, correspondence, and research files related to the South Dakota Constitutional Revision Commission, the Citizens Commission on Executive Reorganization, and other committees examining state and local governance.

The papers contain extensive records of constitutional study, including annotated drafts, comparative analyses, staff reports, constitutional amendments, and testimony. Minutes and supporting material document the activities of the Constitutional Revision Commission from its inception through the mid-1970s. Additional files include official election returns, legislative reports, and legal cases affecting constitutional interpretation. Hendrickson’s work on the Brookings Home Rule Charter is reflected in records, drafts, speeches, and correspondence from the 1990s. The collection also contains publications, atlases, government handbooks, municipal records, and newsletters that provided context for his teaching, research, and public service.

This collection documents J.P. Hendrickson’s role as a political scientist, educator, and civic leader in shaping South Dakota’s constitutional and governmental framework during the late twentieth century. The materials highlight his contributions to the South Dakota Constitutional Revision Commission (1969–1975), his involvement in the development of state governance reforms, and his authorship of the Brookings Home Rule Charter in 1996. The collection preserves the debates, proposals, and documentation of statewide constitutional change, while also illustrating Hendrickson’s influence on local governance in Brookings. Together, these records provide an essential resource for understanding constitutional reform, political restructuring, and civic engagement in South Dakota.