Invitation to Corporate Membership in Southwestern Cooperative Educational Laboratory, Inc.1967-04-19Harris, Fred R., 1930-2024http://rightsstatements.org/vocab/NKC/1.0/enghttp://congressarchives.org/record/CAC_CC_026_3_283_7_0040The document is a letter from the Southwestern Cooperative Educational Laboratory to LaDonna Harris, confirming her Corporate Membership and providing information about other members. The letter also includes a membership application form and expresses willingness to work together in the Laboratory program. It provides details about the organization and its goals, as well as information about the different categories of membership available.